Commit graph

301 commits

Author SHA1 Message Date
Bartlomiej Plotka 841b13641c
promql: Refactored subquery hint tests and added todos. (#7636)
* promql: Refactorer subquery hint tests and added todos.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* fmt.


Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Fixes.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
2020-07-23 23:05:43 +01:00
Bartlomiej Plotka a0df8a383a
promql: Removed global and add ability to have better interval for subqueries if not specified (#7628)
* promql: Removed global and add ability to have better interval for subqueries if not specified

## Changes
* Refactored tests for better hints testing
* Added various TODO in places to enhance.
* Moved DefaultEvalInterval global to opts with func(rangeMillis int64) int64 function instead

Motivation: At Thanos we would love to have better control over the subqueries step/interval.
This is important to choose proper resolution. I think having proper step also does not harm for
Prometheus and remote read users. Especially on stateless querier we do not know evaluation interval
and in fact putting global can be wrong to assume for Prometheus even.

I think ideally we could try to have at least 3 samples within the range, the same
way Prometheus UI and Grafana assumes.

Anyway this interfaces allows to decide on promQL user basis.

Open question: Is taking parent interval a smart move?

Motivation for removing global: I spent 1h fighting with:


=== RUN   TestEvaluations
    TestEvaluations: promql_test.go:31: unexpected error: error evaluating query "absent_over_time(rate(nonexistant[5m])[5m:])" (line 687): unexpected error: runtime error: integer divide by zero
--- FAIL: TestEvaluations (0.32s)
FAIL

At the end I found that this fails on most of the versions including this master if you run this test alone. If run together with many
other tests it passes. This is due to SetDefaultEvaluationInterval(1 * time.Minute)
in test that is ran before TestEvaluations. Thanks to globals (:

Let's fix it by dropping this global.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Added issue links for TODOs.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Removed irrelevant changes.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
2020-07-22 14:39:51 +01:00
Julien Pivotto d77b56e88e
Fix avg_over_time for nan and float64 overflows (#7346)
* Fix avg_over_time with Inf and NaN values

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-07-13 17:30:50 +02:00
Julien Pivotto 72425d4e3d
Add group() aggregator (#7480)
* Add group() aggregator

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-06-30 16:51:18 +02:00
Kemal Akkoyun 66dfb951c4
*: Consistent Error/Warning handling for SeriesSet iterator: Allowing Async Select (#7251)
* Add errors and Warnings to SeriesSet

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Change Querier interface and refactor accordingly

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Refactor promql/engine to propagate warnings at eval stage

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Address review issues

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Make sure all the series from all Selects are pre-advanced

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Address review issues

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Separate merge series sets

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Clean

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Refactor merge querier failure handling

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Refactored and simplified fanout with improvements from incoming chunk iterator PRs.

* Secondary logic is hidden, instead of weird failed series set logic we had.
* Fanout is well commented
* Fanout closing record all errors
* MergeQuerier improved API (clearer)
* deferredGenericMergeSeriesSet is not needed as we return no samples anyway for failed series sets (next = false).

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Fix formatting

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Fix CI issues

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Added final tests for error handling.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Addressed Brian's comments.

* Moved hints in populate to be allocated only when needed.
* Used sync.Once in secondary Querier to achieve all-or-nothing partial response logic.
* Select after first Next is done will panic.

NOTE: in lazySeriesSet in theory we could just panic, I think however we can
totally just return error, it will panic in expand anyway.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Utilize errWithWarnings

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Fix recently introduced expansion issue

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Add tests for secondary querier error handling

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Implement lazy merge

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Add name to test cases

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Reorganize

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Address review comments

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Address review comments

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Remove redundant warnings

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Fix rebase mistake

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>
2020-06-09 17:57:31 +01:00
Brian Brazil 3932a7149f
Correctly track points no longer used by matrixIterSlice's slice. (#7307)
Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2020-05-28 13:36:30 +01:00
Callum Styan 5bb7f00d00
change labelset comparison in promql engine to avoid false positive during detection of duplicates (#7058)
* Use go1.14 new hash/maphash to hash both RHS and LHS instead of XOR'ing
which has been resulting in hash collisions.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Refactor engine labelset signature generation, just use labels.Labels
instead of hashes.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Address review comments; function comments + store result of
lhs.String+rhs.String as key.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Replace all signatureFunc usage with signatureFuncString.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Make optimizations to labels String function and generation of rhs+lhs
as string in resultMetric.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Use separate string functions that don't use strconv just for engine
maps.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Use a byte invalid separator instead of quoting and have a buffer
attached to EvalNodeHelper instead of using a global pool in the labels
package.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Address review comments.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Address more review comments, labels has a function that now builds a
byte slice without turning it into a string.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* Use two different non-ascii hex codes as byte separators between labels
and between sets of labels when building bytes of a Labels struct.

Signed-off-by: Callum Styan <callumstyan@gmail.com>

* We only need the 2nd byte invalid sep. at the beginning of a
labels.Bytes

Signed-off-by: Callum Styan <callumstyan@gmail.com>
2020-05-12 14:03:15 -07:00
Vasily Sliouniaev 0393b188c9
Add Jaeger (#7148)
* Trace remote read

Signed-off-by: vas <vasily.sliouniaev@jet.com>

* Use jaeger

Signed-off-by: vas <vasily.sliouniaev@jet.com>
2020-04-23 02:05:55 +02:00
Marek Slabicki 8224ddec23
Capitalizing first letter of all log lines (#7043)
Signed-off-by: Marek Slabicki <thaniri@gmail.com>
2020-04-11 09:22:18 +01:00
Björn Rabenstein 1da83305be
Merge pull request #7009 from prometheus/release-2.17
Merge release-2.17 into master
2020-03-19 13:46:28 +01:00
Björn Rabenstein a28fa010ee
TSDB: Extract parts out of populateSeries (#6983)
This addresses fabxc's TODO.

More importantly, it now properly defers the
querier.Close(). Previously, if a panic happened after creation of the
querier within the populateSeries function, querier.Close() was never called.

The latter was responsible for #6977.

Signed-off-by: beorn7 <beorn@grafana.com>
2020-03-14 09:03:40 +01:00
Bartlomiej Plotka fe802f29c9 storage: Removed SelectSorted method; Simplified interface; Added requirement for remote read to sort response.
This is technically BREAKING CHANGE, but it was like this from the beginning: I just notice that we rely in
Prometheus on remote read being sorted. This is because we use selected data from remote reads in MergeSeriesSet
which rely on sorting.

I found during work on https://github.com/prometheus/prometheus/pull/5882 that
we do so many repetitions because of this, for not good reason. I think
I found a good balance between convenience and readability with just one method.
Smaller the interface = better.

Also I don't know what TestSelectSorted was testing, but now it's testing sorting.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>
2020-03-13 13:06:25 +00:00
Björn Rabenstein bc703b6456
Use struct{} as underlying type for context keys (#6965)
This is an alternative to #6963.

Signed-off-by: beorn7 <beorn@grafana.com>
2020-03-11 15:05:35 +01:00
Tobias Guggenmos f9db320e5a Look up function call in all cases
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-24 13:45:03 +01:00
Tobias Guggenmos 6c00f2ffcb Comment fixes
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:09:23 +01:00
Tobias Guggenmos 1360f9ff12 Fix all build errors in promql package
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:09:23 +01:00
Tobias Guggenmos 2164e366ea Fix more identifiers
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:53 +01:00
Tobias Guggenmos 5caf7ed6db Fix more identifiers
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:53 +01:00
Tobias Guggenmos 9a1366775e Store function implementations independently of their signatures
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:53 +01:00
Tobias Guggenmos ff0ea1c1ac Fix more identifiers
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:53 +01:00
Tobias Guggenmos 6b1b323558 Export sequenceValue
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:53 +01:00
Tobias Guggenmos 228967a507 Fix usages of more things that have moved the package
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:07:27 +01:00
Tobias Guggenmos 4a4817a444 Fix usages of parser.Statement
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:05:21 +01:00
Tobias Guggenmos 2f1113479f Fix usages of ValueType
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:05:21 +01:00
Tobias Guggenmos fab2373752 Add everything the parser needs to build
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-02-17 16:05:21 +01:00
Björn Rabenstein af04cb22c8
Merge pull request #6821 from prometheus/release-2.16
Release 2.16
2020-02-14 13:10:14 +01:00
Julien Pivotto ff0003e072
Make lookbackDelta a option of QueryEngine (#6746)
* Make lookbackDelta a option of QueryEngine

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* julius' suggestion

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* remove trivial getter

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* Assume lookback delta is always > 0

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* add debug log

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* don't expose loopback delta

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* Specify that lookack delta is also used in federation

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* Fix federation test

While we have added some logic to the promql engine to keep it backwards
compatible and have a 5 minute loopback by default, the web/ package is
likely to really be internal to Prometheus and we should not add the
same kind of heuritstics here.

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* loopback delta: Fix debug log

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-02-10 00:58:23 +01:00
Julien Pivotto cbd0eec9fc Avoid /1000
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-02-08 16:30:09 +01:00
Julien Pivotto 881dde505a promql: fix promql query log step unit
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-02-08 16:26:56 +01:00
Julien Pivotto 9adad8ad30 Remove MaxConcurrent from the PromQL engine opts (#6712)
Since we use ActiveQueryTracker to check for concurrency in
d992c36b3a it does not make sense to keep
the MaxConcurrent value as an option of the PromQL engine.

This pull request removes it from the PromQL engine options, sets the
max concurrent metric to -1 if there is no active query tracker, and use
the value of the active query tracker otherwise.

It removes dead code and also will inform people who import the promql
package that we made that change, as it breaks the EngineOpts struct.

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-28 20:38:49 +00:00
Brian Brazil 38d32e0686 Don't sort postings if we only have one block.
Sorting the heads postings can be quite slow.
We only need sorted series when merging with another
querier, so only sort then.
This will make big queries that only touch the head faster,
though queries that touch both the head and a block will still
be the same speed. This probably won't help much with graphing
unless the range is under an hour, however it should make most
recording rules faster.

Add gaurantee that remote read streaming produces sorted series.

PromQL benchmarks for histograms show only 2-3% improvement, but
they're only over 1k series.

benchmark                                                old ns/op      new ns/op      delta
BenchmarkQuerierSelect/Head/1of1000000-4                 1375486282     507657736      -63.09%
BenchmarkQuerierSelect/Head/10of1000000-4                1387859004     507769850      -63.41%
BenchmarkQuerierSelect/Head/100of1000000-4               1387087935     506029110      -63.52%
BenchmarkQuerierSelect/Head/1000of1000000-4              1386869064     504521986      -63.62%
BenchmarkQuerierSelect/Head/10000of1000000-4             1386213685     505210422      -63.55%
BenchmarkQuerierSelect/Head/100000of1000000-4            1392754988     529842406      -61.96%
BenchmarkQuerierSelect/Head/1000000of1000000-4           1569414722     725059506      -53.80%
BenchmarkQuerierSelect/SortedHead/1of1000000-4           1381019902     1370495863     -0.76%
BenchmarkQuerierSelect/SortedHead/10of1000000-4          1375696209     1366789468     -0.65%
BenchmarkQuerierSelect/SortedHead/100of1000000-4         1386009422     1364519297     -1.55%
BenchmarkQuerierSelect/SortedHead/1000of1000000-4        1377700532     1364486191     -0.96%
BenchmarkQuerierSelect/SortedHead/10000of1000000-4       1383539536     1369545314     -1.01%
BenchmarkQuerierSelect/SortedHead/100000of1000000-4      1410089163     1394731339     -1.09%
BenchmarkQuerierSelect/SortedHead/1000000of1000000-4     1634744148     1581554956     -3.25%
BenchmarkQuerierSelect/Block/1of1000000-4                881741242      879839470      -0.22%
BenchmarkQuerierSelect/Block/10of1000000-4               880381562      882846038      +0.28%
BenchmarkQuerierSelect/Block/100of1000000-4              887519357      881016916      -0.73%
BenchmarkQuerierSelect/Block/1000of1000000-4             902194205      883433524      -2.08%
BenchmarkQuerierSelect/Block/10000of1000000-4            892321964      885130170      -0.81%
BenchmarkQuerierSelect/Block/100000of1000000-4           938604466      933527150      -0.54%
BenchmarkQuerierSelect/Block/1000000of1000000-4          1313510845     1295881124     -1.34%

benchmark                                                old allocs     new allocs     delta
BenchmarkQuerierSelect/Head/1of1000000-4                 4000056        4000018        -0.00%
BenchmarkQuerierSelect/Head/10of1000000-4                4000074        4000036        -0.00%
BenchmarkQuerierSelect/Head/100of1000000-4               4000254        4000216        -0.00%
BenchmarkQuerierSelect/Head/1000of1000000-4              4002054        4002016        -0.00%
BenchmarkQuerierSelect/Head/10000of1000000-4             4020054        4020016        -0.00%
BenchmarkQuerierSelect/Head/100000of1000000-4            4200054        4200016        -0.00%
BenchmarkQuerierSelect/Head/1000000of1000000-4           6000054        6000016        -0.00%
BenchmarkQuerierSelect/SortedHead/1of1000000-4           4000071        4000071        +0.00%
BenchmarkQuerierSelect/SortedHead/10of1000000-4          4000089        4000089        +0.00%
BenchmarkQuerierSelect/SortedHead/100of1000000-4         4000269        4000269        +0.00%
BenchmarkQuerierSelect/SortedHead/1000of1000000-4        4002069        4002069        +0.00%
BenchmarkQuerierSelect/SortedHead/10000of1000000-4       4020069        4020069        +0.00%
BenchmarkQuerierSelect/SortedHead/100000of1000000-4      4200069        4200069        +0.00%
BenchmarkQuerierSelect/SortedHead/1000000of1000000-4     6000069        6000069        +0.00%
BenchmarkQuerierSelect/Block/1of1000000-4                6000023        6000022        -0.00%
BenchmarkQuerierSelect/Block/10of1000000-4               6000059        6000058        -0.00%
BenchmarkQuerierSelect/Block/100of1000000-4              6000419        6000418        -0.00%
BenchmarkQuerierSelect/Block/1000of1000000-4             6004019        6004018        -0.00%
BenchmarkQuerierSelect/Block/10000of1000000-4            6040019        6040018        -0.00%
BenchmarkQuerierSelect/Block/100000of1000000-4           6400019        6400018        -0.00%
BenchmarkQuerierSelect/Block/1000000of1000000-4          10000020       10000019       -0.00%

benchmark                                                old bytes     new bytes     delta
BenchmarkQuerierSelect/Head/1of1000000-4                 229192200     176001176     -23.21%
BenchmarkQuerierSelect/Head/10of1000000-4                229193352     176002328     -23.21%
BenchmarkQuerierSelect/Head/100of1000000-4               229204872     176013848     -23.21%
BenchmarkQuerierSelect/Head/1000of1000000-4              229320072     176129048     -23.20%
BenchmarkQuerierSelect/Head/10000of1000000-4             230472072     177281048     -23.08%
BenchmarkQuerierSelect/Head/100000of1000000-4            241992072     188801048     -21.98%
BenchmarkQuerierSelect/Head/1000000of1000000-4           357192072     304001048     -14.89%
BenchmarkQuerierSelect/SortedHead/1of1000000-4           229193928     229193928     +0.00%
BenchmarkQuerierSelect/SortedHead/10of1000000-4          229195080     229195080     +0.00%
BenchmarkQuerierSelect/SortedHead/100of1000000-4         229206600     229206600     +0.00%
BenchmarkQuerierSelect/SortedHead/1000of1000000-4        229321800     229321800     +0.00%
BenchmarkQuerierSelect/SortedHead/10000of1000000-4       230473800     230473800     +0.00%
BenchmarkQuerierSelect/SortedHead/100000of1000000-4      241993800     241993800     +0.00%
BenchmarkQuerierSelect/SortedHead/1000000of1000000-4     357193800     357193800     +0.00%
BenchmarkQuerierSelect/Block/1of1000000-4                227201516     227201500     -0.00%
BenchmarkQuerierSelect/Block/10of1000000-4               227202924     227202908     -0.00%
BenchmarkQuerierSelect/Block/100of1000000-4              227217036     227217020     -0.00%
BenchmarkQuerierSelect/Block/1000of1000000-4             227358156     227358140     -0.00%
BenchmarkQuerierSelect/Block/10000of1000000-4            228769356     228769340     -0.00%
BenchmarkQuerierSelect/Block/100000of1000000-4           242881356     242881340     -0.00%
BenchmarkQuerierSelect/Block/1000000of1000000-4          384001616     384001600     -0.00%

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2020-01-28 09:14:56 +00:00
Julien Pivotto d992c36b3a promql: make active query tracker context-aware (#6701)
* promql: make query logger context-aware
* Remove gate
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-27 22:29:44 +00:00
Julien Pivotto 5f27ac3583 Refactor query log fields (#6694)
* Refactor query log fields

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-27 09:53:10 +00:00
Tobias Guggenmos 2aacd807b3 PromQL: Various small improvements in the parser (#6652)
* Move check for empty VectorSelector to typeChecking
* Move check for twice set metric name to typeChecking
* Make child of MatrixSelector a general Node
* rename checkType to checkAST
* Rename fail to addParseErr
* Remove trailing whitespace

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-01-17 15:16:58 +00:00
Tobias Guggenmos 3a204be6b7 PromQL: Fix string and parentheses handling in engine (#6612)
* WIP: PromQL: Allow engine to return strings

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>

* Add test suggested by @roidelapluie

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>

* Fix typo in React UI

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>

* Fix parenthesis handling for functions and aggregator params

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>

* Add more tests

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>

* Fix React UI test

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-01-15 18:31:58 +01:00
Tobias Guggenmos 0c8e9ef09e PromQL: Add position metadata to the AST (#6615)
Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
Co-authored-by: Julius Volz <julius.volz@gmail.com>
2020-01-14 16:12:15 +00:00
Tobias Guggenmos 64194f7d45 PromQL: AST: Make VectorSelector Children of MatrixSelector (#6590)
Make Vector selectors children of Matrix Selectors

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2020-01-10 14:25:41 +00:00
Julien Pivotto 3885562587 Query Logging styling (#6594)
- Fix Json vs JSON in activequerylogger
- Fix SetQueryLogger always returns nil

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-09 21:11:39 +00:00
Julien Pivotto 9d9bc524e5 Add query log (#6520)
* Add query log, make stats logged in JSON like in the API

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-08 13:28:43 +00:00
Julien Pivotto e0afec906f add absent_over_time (#6490)
* Implement absent_over_time

Fixes #2882

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-01-03 15:26:12 +00:00
Mark Nevill b0a5c51b95 Return unused point slice to pool in Call and VectorSelector eval. (#6427)
Signed-off-by: Mark Nevill <mark.nevill@gmail.com>
2019-12-09 10:32:40 +00:00
Garrett 5a9c4acfbf Pushdown aggregator group by through read hint (#6401)
* Pushdown aggregator group by through read hint

Implement https://github.com/prometheus/prometheus/issues/6400

* add temporal aggregation pushdown support

Signed-off-by: xiancli <xiancli@ebay.com>
2019-12-05 14:06:28 +00:00
Tobias Guggenmos bbd92b85da promql: Use capitalized names for item types (#6371)
For yacc generated parsers there is the convention to capitalize the names of item types provided by the lexer, which makes it easy to distinct lexer tokens (capitalized) from nonterminal symbols (not capitalized) in language grammars.

This convention is also followed by the (non generated) go compiler (see https://golang.org/pkg/go/token/#Token).

Part of the parser rewrite described in #6256.

Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>
2019-11-26 13:29:42 +00:00
AllenZMC ead0933dd9 fix word 'substracting' to 'subtracting' (#5822)
Signed-off-by: czm <zhongming.chang@daocloud.io>
2019-08-01 15:44:38 +01:00
Advait Bhatwadekar 5d401f1e1b Added query logging for prometheus. Issue #1315 (#5794)
* Added query logging for prometheus.
Options added:
1) active.queries.filepath: Filename where queries will be recorded
2) active.queries.filesize: Size of the file where queries will be recorded.

Functionality added:
All active queries are now logged in a file. If prometheus crashes unexpectedly, these queries are also printed out on stdout in the rerun.

Queries are written concurrently to an mmaped file, and removed once they are done. Their positions in the file are reused. They are written in json format. However, due to dynamic nature of application, the json has an extra comma after the last query, and is missing an ending ']'. There may also null bytes in the tail of file.

Signed-off-by: Advait Bhatwadekar <advait123@ymail.com>
2019-07-31 16:12:43 +01:00
Ganesh Vernekar 588eb20018
Efficient iteration and search in HashForLabels and HashWithoutLabels (#5707)
* Efficient iteration and search in Labels.HashForLabels

Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>

* Better names for variables

Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>

* HashWithoutLabels optimizations

Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>

* Refactor HashForLabels and HashWithoutLabels to take sorted names

Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>

* Fix review comments

Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
2019-06-28 18:22:51 +05:30
beorn7 dd81912554 Add objectives to Summaries
With the next release of client_golang, Summaries will not have
objectives by default. To not lose the objectives we have right now,
explicitly state the current default objectives.

Signed-off-by: beorn7 <beorn@grafana.com>
2019-06-12 02:03:13 +02:00
Thomas Jackson a000cec011 Re-use label builder in promql aggregation (#5641)
For my benchmarks on aggregation this reduces allocations by ~5% (~10%
time improvement):

```
benchmark                                                    old ns/op     new ns/op     delta
BenchmarkEvaluations/benchdata/aggregators.test/promxy-4     727692        649626        -10.73%

benchmark                                                    old allocs     new allocs     delta
BenchmarkEvaluations/benchdata/aggregators.test/promxy-4     2566           2434           -5.14%

benchmark                                                    old bytes     new bytes     delta
BenchmarkEvaluations/benchdata/aggregators.test/promxy-4     162760        148854        -8.54%
```

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
2019-06-11 09:24:49 +01:00
Goutham Veeramachaneni 3cc5f9d880 Make sure subquery range is taken into account for selection (#5467)
* Make sure subquery range is taken into account for selection

Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
2019-04-17 13:52:41 +01:00
Julius Volz bc1c7f1809 Fix scalar-vector comparisons (#5454)
* Fix scalar-vector comparisons

Fixes https://github.com/prometheus/prometheus/issues/5452

Signed-off-by: Julius Volz <julius.volz@gmail.com>
2019-04-11 10:42:16 +01:00
Bryan Boreham 69dd090880 Check for cancellation on every step of a range evaluation
Signed-off-by: Bryan Boreham <bryan@weave.works>
2019-04-10 13:27:45 +01:00
Bryan Boreham e4a37d0986 Replace select with simpler error check
The documentation for Context states that this is just as good:
	// If Done is not yet closed, Err returns nil.
	// If Done is closed, Err returns a non-nil error

Signed-off-by: Bryan Boreham <bryan@weave.works>
2019-04-10 13:27:45 +01:00
Tariq Ibrahim 8fdfa8abea refine error handling in prometheus (#5388)
i) Uses the more idiomatic Wrap and Wrapf methods for creating nested errors.
ii) Fixes some incorrect usages of fmt.Errorf where the error messages don't have any formatting directives.
iii) Does away with the use of fmt package for errors in favour of pkg/errors

Signed-off-by: tariqibrahim <tariq181290@gmail.com>
2019-03-26 00:01:12 +01:00
Julius Volz 8155cc4992
Expose lexer item types (#5358)
* Expose lexer item types

We have generally agreed to expose AST types / values that are necessary
to make sense of the AST outside of the promql package. Currently the
`UnaryExpr`, `BinaryExpr`, and `AggregateExpr` AST nodes store the lexer
item type to indicate the operator type, but since the individual item
types aren't exposed, an external user of the package cannot determine
the operator type. So this PR exposes them.

Although not all item types are required to make sense of the AST (some
are really only used in the lexer), I decided to expose them all here to
be somewhat more consistent. Another option would be to not use lexer
item types at all in AST nodes.

The concrete motivation is my work on the PromQL->Flux transpiler, but
this ought to be useful for other cases as well.

Signed-off-by: Julius Volz <julius.volz@gmail.com>

* Fix item type names in tests

Signed-off-by: Julius Volz <julius.volz@gmail.com>
2019-03-14 20:53:55 +01:00
Daisy T 683fbc59ec exponentation operator to drop metric name in result of op operation (#5329)
Signed-off-by: Daisy T <daisyts@gmx.com>
2019-03-12 10:21:42 +00:00
Brian Brazil 858c363e94 Fix panic when aggregator param is not a literal.
The return value for checkForSeriesSetExpansion
is always nil, simplify.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2019-03-04 12:00:05 +00:00
Tariq Ibrahim a2a6e24f9f show list of offending labels in the error message in many-to-many scenarios (#5189)
Signed-off-by: tariqibrahim <tariq181290@gmail.com>
2019-02-09 10:17:52 +01:00
Bryan Boreham 8841692a63 Use the context associated with the inner evaluation span (#5130)
Signed-off-by: Bryan Boreham <bryan@weave.works>
2019-01-28 18:33:30 +00:00
Matt Layher 43c9d9e91f promql: apply golint suggestions (#5066)
Signed-off-by: Matt Layher <mdlayher@gmail.com>
2019-01-08 18:26:02 +00:00
Simon Pasquier f678e27eb6
*: use latest release of staticcheck (#5057)
* *: use latest release of staticcheck

It also fixes a couple of things in the code flagged by the additional
checks.

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Use official release of staticcheck

Also run 'go list' before staticcheck to avoid failures when downloading packages.

Signed-off-by: Simon Pasquier <spasquie@redhat.com>
2019-01-04 14:47:38 +01:00
Tom Wilkie 6e08029b56
Move err to be the last return value from storage.Select. (#5054)
Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>
2019-01-02 11:10:13 +00:00
Ganesh Vernekar dbe55c1352 Subquery (#4831)
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
2018-12-22 13:47:13 +00:00
Tom Wilkie e1d9bf77f1
Export the error field in ErrStorage, so we can 'throw' it outside the package. (#4954)
Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>
2018-12-04 16:49:21 +00:00
mknapphrt f0e9196dca Return warnings on a remote read fail (#4832)
Signed-off-by: Mark Knapp <mknapp@hudson-trading.com>
2018-11-30 14:27:12 +00:00
Ben Kochie c6399296dc
Fix spelling/typos (#4921)
* Fix spelling/typos

Fix spelling/typos reported by codespell/misspell.
* UK -> US spelling changes.

Signed-off-by: Ben Kochie <superq@gmail.com>
2018-11-27 17:44:29 +01:00
Bryan Boreham 9a956872a3 Make ErrorStorage a concrete type not an interface
Since it is used in a type assertion, having it as an alias to the
error interface is the same as saying 'error', i.e. it succeeds for
all types of error.  Change to a struct which is a concrete type and
the type assertion will only succeed if the type is identical.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2018-10-04 13:13:41 +00:00
Callum Styan 9bca041285 WIP: keep track of samples per query, set a max # of samples (#4513)
* keep track of samples per query, set a max # of samples that can be in
memory at once

Signed-off-by: Callum Styan <callumstyan@gmail.com>
2018-10-02 12:59:19 +01:00
Tom Wilkie 4c52400708
Limit concurrent remote reads. (#4656)
Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>
2018-09-25 20:07:34 +01:00
Harsh Agarwal 18a9a390b5 Add duplicate-labelset check for range/instant vectors (#4589)
Signed-off-by: Harsh Agarwal <cs15btech11019@iith.ac.in>
2018-09-18 10:46:13 +01:00
Ganesh Vernekar 576ee4d309 Label name check for 'count_values' (#4585)
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
2018-09-13 15:27:36 +05:30
Dan Cech 9f4cb06a37 use Welford/Knuth method to compute standard deviation and variance (#4533)
* use Welford/Knuth method to compute standard deviation and variance, avoids float precision issues
* use better method for calculating avg and avg_over_time

Signed-off-by: Dan Cech <dcech@grafana.com>
2018-08-26 10:28:47 +01:00
Goutham Veeramachaneni 71855a22a4
Add tracing spans to promql (#4436)
* Add spans to promql

Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>

* Simplify timer and span tracking.

Signed-off-by: Goutham Veeramachaneni <gouthamve@gmail.com>
2018-08-16 13:11:34 +05:30
Thomas Jackson 56daa1f28a Only add LookbackDelta to vector selectors (#4399)
Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>

Related to #4226
2018-07-19 06:16:05 +01:00
Alin Sinpalean 372e7652b7 Reuse (copy) overlapping matrix samples between range evaluation steps (#4315)
* Reuse (copy) overlapping matrix samples between range evaluation steps.

Signed-off-by: Alin Sinpalean <alin.sinpalean@gmail.com>
2018-07-18 11:14:02 +01:00
Tony Lee bcdaf8e2d2 add unused pointslices to the pool (#4363)
Signed-off-by: Tony Lee <tl@hudson-trading.com>
2018-07-18 05:29:21 +01:00
Alin Sinpalean e3b775b78b Simplify BufferedSeriesIterator usage (#4294)
* Allow for BufferedSeriesIterator instances to be created without an underlying iterator, to simplify their usage.

Signed-off-by: Alin Sinpalean <alin.sinpalean@gmail.com>
2018-07-18 05:10:28 +01:00
Julius Volz 219e477272 Fix some (valid) lint errors (#4287)
Signed-off-by: Julius Volz <julius.volz@gmail.com>
2018-07-18 05:07:33 +01:00
Thomas Jackson 92c6f0c92e Add offset to selectParams (#4226)
* Add Start/End to SelectParams
* Make remote read use the new selectParams for start/end

This commit will continue sending the start/end time of the remote read
query as the overarching promql time and the specific range of data that
the query is intersted in receiving a response to is now part of the
ReadHints (upstream discussion in #4226).

* Remove unused vendored code

The genproto.sh script was updated, but the code wasn't regenerated.
This simply removes the vendored deps that are no longer part of the
codegen output.

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
2018-07-18 04:58:00 +01:00
Alin Sinpalean 96fb0b2155 Optimize PromQL aggregations (#4248)
* Compute hash of label subsets without creating a LabelSet first.

Signed-off-by: Alin Sinpalean <alin.sinpalean@gmail.com>
2018-07-18 04:56:27 +01:00
Tom Wilkie 3228814456 Don't forget to register query_duration_seconds{slice="queue_time"} (#4381)
Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>
2018-07-15 12:24:37 +01:00
Thomas Jackson a6dace8829 Check for timeout in each iteration of matrixSelector (#4300)
Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>

Fixes #4288
2018-06-21 22:43:31 +01:00
Thomas Jackson 630f42fcf1 Timeout if populating iterators takes too long (#4291)
Right now promql won't time out a request if populating the iterators
takes a long time.

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>

Fixes #4289
2018-06-21 08:14:51 +01:00
Thomas Jackson 404abe0f1c Bubble up errors to promql from populating iterators (#4136)
This changes the Walk/Inspect API inside the promql package to bubble
up errors. This is done by having the inspector return an error (instead
of a bool) and then bubbling that up in the Walk. This way if any error
is encountered in the Walk() the walk will stop and return the error.
This avoids issues where errors from the Querier where being ignored
(causing incorrect promql evaluation).

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>

Fixes #4136
2018-06-07 17:27:34 +01:00
Mario Trangoni 0e2aa35771 promql: fix unconvert issues (#4040)
See,
$ gometalinter --vendor --disable-all --enable=unconvert --deadline 6m ./...
promql/engine.go:1396:26⚠️ unnecessary conversion (unconvert)
promql/engine.go:1396:40⚠️ unnecessary conversion (unconvert)
promql/engine.go:1398:26⚠️ unnecessary conversion (unconvert)
promql/engine.go:1398:40⚠️ unnecessary conversion (unconvert)
promql/engine.go:1427:26⚠️ unnecessary conversion (unconvert)
promql/engine.go:1427:40⚠️ unnecessary conversion (unconvert)
promql/engine.go:1429:26⚠️ unnecessary conversion (unconvert)
promql/engine.go:1429:40⚠️ unnecessary conversion (unconvert)
promql/engine.go:1505:50⚠️ unnecessary conversion (unconvert)
promql/engine.go:1573:46⚠️ unnecessary conversion (unconvert)
promql/engine.go:1578:46⚠️ unnecessary conversion (unconvert)
promql/engine.go:1591:80⚠️ unnecessary conversion (unconvert)
promql/engine.go:1602:94⚠️ unnecessary conversion (unconvert)
promql/engine.go:1630:18⚠️ unnecessary conversion (unconvert)
promql/engine.go:1631:24⚠️ unnecessary conversion (unconvert)
promql/engine.go:1634:18⚠️ unnecessary conversion (unconvert)
promql/engine.go:1635:34⚠️ unnecessary conversion (unconvert)
promql/functions.go:302:42⚠️ unnecessary conversion (unconvert)
promql/functions.go:315:42⚠️ unnecessary conversion (unconvert)
promql/functions.go:334:26⚠️ unnecessary conversion (unconvert)
promql/functions.go:395:31⚠️ unnecessary conversion (unconvert)
promql/functions.go:406:31⚠️ unnecessary conversion (unconvert)
promql/functions.go:454:27⚠️ unnecessary conversion (unconvert)
promql/functions.go:701:46⚠️ unnecessary conversion (unconvert)
promql/functions.go:701:78⚠️ unnecessary conversion (unconvert)
promql/functions.go:730:43⚠️ unnecessary conversion (unconvert)
promql/functions.go:1220:23⚠️ unnecessary conversion (unconvert)
promql/functions.go:1249:23⚠️ unnecessary conversion (unconvert)
promql/quantile.go:107:54⚠️ unnecessary conversion (unconvert)
promql/quantile.go:182:16⚠️ unnecessary conversion (unconvert)
promql/quantile.go:182:64⚠️ unnecessary conversion (unconvert)

Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com>
2018-06-06 18:20:38 +01:00
Brian Brazil dd6781add2 Optimise PromQL (#3966)
* Move range logic to 'eval'

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make aggregegate range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* PromQL is statically typed, so don't eval to find the type.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Extend rangewrapper to multiple exprs

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Start making function evaluation ranged

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make instant queries a special case of range queries

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Eliminate evalString

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Evaluate range vector functions one series at a time

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make unary operators range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make binops range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Pass time to range-aware functions.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make simple _over_time functions range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reduce allocs when working with matrix selectors

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Add basic benchmark for range evaluation

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reuse objects for function arguments

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Do dropmetricname and allocating output vector only once.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Add range-aware support for range vector functions with params

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Optimise holt_winters, cut cpu and allocs by ~25%

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make rate&friends range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make more functions range aware. Document calling convention.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make date functions range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make simple math functions range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Convert more functions to be range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make more functions range aware

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Specialcase timestamp() with vector selector arg for range awareness

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove transition code for functions

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove the rest of the engine transition code

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove more obselete code

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove the last uses of the eval* functions

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove engine finalizers to prevent corruption

The finalizers set by matrixSelector were being called
just before the value they were retruning to the pool
was then being provided to the caller. Thus a concurrent query
could corrupt the data that the user has just been returned.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Add new benchmark suite for range functinos

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Migrate existing benchmarks to new system

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Expand promql benchmarks

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Simply test by removing unused range code

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* When testing instant queries, check range queries too.

To protect against subsequent steps in a range query being
affected by the previous steps, add a test that evaluates
an instant query that we know works again as a range query
with the tiimestamp we care about not being the first step.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reuse ring for matrix iters. Put query results back in pool.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reuse buffer when iterating over matrix selectors

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Unary minus should remove metric name

Cut down benchmarks for faster runs.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reduce repetition in benchmark test cases

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Work series by series when doing normal vectorSelectors

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Optimise benchmark setup, cuts time by 60%

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Have rangeWrapper use an evalNodeHelper to cache across steps

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Use evalNodeHelper with functions

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Cache dropMetricName within a node evaluation.

This saves both the calculations and allocs done by dropMetricName
across steps.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reuse input vectors in rangewrapper

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Reuse the point slices in the matrixes input/output by rangeWrapper

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make benchmark setup faster using AddFast

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Simplify benchmark code.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Add caching in VectorBinop

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Use xor to have one-level resultMetric hash key

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Add more benchmarks

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Call Query.Close in apiv1

This allows point slices allocated for the response data
to be reused by later queries, saving allocations.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Optimise histogram_quantile

It's now 5-10% faster with 97% less garbage generated for 1k steps

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make the input collection in rangeVector linear rather than quadratic

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Optimise label_replace, for 1k steps 15x fewer allocs and 3x faster

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Optimise label_join, 1.8x faster and 11x less memory for 1k steps

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Expand benchmarks, cleanup comments, simplify numSteps logic.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Address Fabian's comments

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Comments from Alin.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Address jrv's comments

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Remove dead code

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Address Simon's comments.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Rename populateIterators, pre-init some sizes

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Handle case where function has non-matrix args first

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Split rangeWrapper out to rangeEval function, improve comments

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Cleanup and make things more consistent

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Make EvalNodeHelper public

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>

* Fabian's comments.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2018-06-04 15:47:45 +02:00
David King 6286c10df0 Fix OOM when a large K is used in topk queries (#4087)
This attempts to close #3973.

Handles cases where the length of the input vector to an aggregate topk
/ bottomk function is less than the K paramater. The change updates
Prometheus to allocate a result vector the same length as the input
vector in these cases.

Previously Prometheus would out-of-memory panic for large K values. This
change makes that unlikely unless the size of the input vector is
equally large.

Signed-off-by: David King <dave@davbo.org>
2018-04-16 09:03:04 +01:00
Tony Lee 7cd56f56df add queue_time slice to query_duration_seconds (#4050) 2018-04-05 19:56:58 +01:00
Anton Tereshchenkov 18bbec050c promql: propagate storage errors 2018-03-14 15:19:22 +01:00
Nikunj Aggarwal 998dfcbac6 Expose itemtype outside the package (#3933) 2018-03-08 16:52:44 +00:00
Fabian Reinartz 309c666426
Merge pull request #3671 from prometheus/queryparams
*: implement query params
2018-02-15 12:24:34 +01:00
Fabian Reinartz 7ccd4b39b8 *: implement query params
This adds a parameter to the storage selection interface which allows
query engine(s) to pass information about the operations surrounding a
data selection.
This can for example be used by remote storage backends to infer the
correct downsampling aggregates that need to be provided.
2018-02-13 12:17:22 +01:00
Krasi Georgiev a53d4ed197 drop metric name for bool modifier (#3821)
fixes #3820
2018-02-11 16:15:55 +00:00
Fabian Reinartz f8fccc73d8 promql: remove global metrics 2017-11-24 07:57:54 +01:00
Fabian Reinartz 83cd270ea4 *: adapt to storage interface changes 2017-11-23 19:05:04 +01:00
David Kaltschmidt 87c46ea6c3 Renamed TotalEvalTime to EvalTotalTime
* TotalFoo suggested a comprehensive timing, but TotalEvalTime was part
of the Exec timings, together with Queue timings
* The other option was to rename ExecTotalTime to TotalExecTime, but
 there was already ExecQueueTime, suggesting Exec to be some sort of
group
2017-11-17 17:46:51 +01:00
David Kaltschmidt c93e54d240 Adds execution timer stats to the range query
API consumers should be able to get insight into the query run times.
The UI currently measures total roundtrip times. This PR allows for more
fine grained metrics to be exposed.

* adds new timer for total execution time (queue + eval)

* expose new timer, queue timer, and eval timer in stats field of the
 range query response:
```json
{
  "status": "success",
  "data": {
    "resultType": "matrix",
    "result": [],
    "stats": {
      "execQueueTimeNs": 4683,
      "execTotalTimeNs": 2086587,
      "totalEvalTimeNs": 2077851
    }
  }
}
```

* stats field is optional, only set when query parameter `stats` is not
empty

Try it via
```sh
curl 'http://localhost:9090/api/v1/query_range?query=up&start=1486480279&end=1486483879&step=14000&stats=true'
```

Review feedback

* moved query stats json generation to query_stats.go
* use seconds for all query timers
* expose all timers available
* Changed ExecTotalTime string representation from Exec queue total time to Exec total time
2017-11-16 16:05:10 +01:00
Brian Brazil 99905f82a6 Remove keep_common modifier.
See #3060
2017-10-05 13:27:48 +01:00
Brian Brazil 67274f0794 Remove 4 interval staleness heuristic. (#3244)
This means that if there is no stale marker, only the usual staleness
delta (5m) applies.

It has occured to me that there is an oddity in the heurestic. It works
fine as long as you have 2 points within the last 5m, but breaks down
when the time window advances to the point where you have just 1 point.

Consider you had points at t=0 and t=10. With the heurestic it goes stale
at t=51, up until t=300. However from t=301 until t=310 we only
see the t=10 point and the series comes back to life. That is not
desirable.

I don't see a way to keep this form of heurestic working given this
issue, so thus I'm removing it.
2017-10-05 12:55:14 +01:00
Julius Volz f7e8348a88 Re-add contexts to storage.Storage.Querier() (#3230)
* Re-add contexts to storage.Storage.Querier()

These are needed when replacing the storage by a multi-tenant
implementation where the tenant is stored in the context.

The 1.x query interfaces already had contexts, but they got lost in 2.x.

* Convert promql.Engine to use native contexts
2017-10-04 21:04:15 +02:00
Fabian Reinartz d21f149745 *: migrate to go-kit/log 2017-09-08 22:01:51 +05:30
Fabian Reinartz 25f3e1c424 Merge branch 'master' into mergemaster 2017-08-10 17:04:25 +02:00
Alexey Palazhchenko 695ec0b981 Fix few typos. (#2962) 2017-07-18 13:58:00 +01:00
Goutham Veeramachaneni 4194d2ac79 Call At() only if Next() is true
Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
2017-07-13 18:42:45 +02:00
Goutham Veeramachaneni d407bd150c Consolidate the duration params in CLI
* All CLI params moved to model.Duration

Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
2017-06-16 20:20:57 +05:30
Goutham Veeramachaneni 507790a357
Rework logging to use explicitly passed logger
Mostly cleaned up the global logger use. Still some uses in discovery
package.

Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
2017-06-16 15:52:44 +05:30
Brian Brazil 220e78b9c3 Consider a series stale after 4.1 intervals with no data.
To cover the cases where stale markers may not be available,
we need to infer the interval and mark series stale based on that.
As we're lacking stale markers this is less accurate, however
it should be good enough for these cases.

We need 4 intervals as if say we had data at t=0 and t=10,
coming via federation. The next data point should be at t=20 however it
could take up to t=30 for it actually to be ingested, t=40 for it to be
scraped via federation and t=50 for it to be ingested.
We then add 10% on to that for slack, as we do elsewhere.
2017-05-24 14:27:17 +01:00
Brian Brazil c02c25d5ba Allow peeking back further in buffer. 2017-05-24 14:27:17 +01:00
Brian Brazil a5cf25743c Move stalness check into a function 2017-05-16 18:33:51 +01:00
Brian Brazil 80b40e6d91 Add initial staleness handing to promql.
For instant vectors, if "stale" is the newest sample
ignore the timeseries.

For range vectors, filter out "stale" samples.

Make it possible to inject "stale" samples in promql tests.
2017-05-16 18:33:51 +01:00
Fabian Reinartz 6e804b3497 Merge branch 'master' into dev-2.0 2017-05-12 13:29:58 +02:00
Brian Brazil fcc88f0e1e query/query_range should return eval timestamp
Query and query_range should return the timestamp
at which an evaluation is performed, not the timestamp
of the data. This is as that's what query range asked
for, and we need to keep query consistent with that.

Query for a matrix remains unchanged, returning the literal
matrix.
2017-05-12 12:00:31 +01:00
Brian Brazil 517b81f927 Add timestamp() function.
Make the timestamp of instant vectors be the timestamp of the sample
rather than the evaluation. We were not using this anywhere, so this is
safe.

Add a function to return the timestamp of samples in an instant vector.

Fixes #1557
2017-05-12 12:00:31 +01:00
Tom Wilkie 4d9b917d11 Instrument Prometheus with OpenTracing (#2554)
* Use request.Context() instead of a global map of contexts.

* Add some basic opentracing instrumentation on the query path.

* Remove tracehandler endpoint.
2017-05-02 18:49:29 -05:00
Fabian Reinartz 73b8ff0ddc Merge branch 'master' into dev-2.0 2017-04-27 10:19:55 +02:00
Tom Wilkie f0e8a5f37c Add promql.ErrStorage, which is interpreted by the API as a 500. 2017-04-06 14:41:23 +01:00
Fabian Reinartz c389193b37 Merge branch 'master' into dev-2.0 2017-03-17 16:27:07 +01:00
Fabian Reinartz 0ecd205794 promql: Use buffer pool for matrix allocations 2017-03-14 10:57:34 +01:00
Fabian Reinartz b09b90a940 Correctly close querier on error, revendor tsdb 2017-03-09 15:40:52 +01:00
Goutham Veeramachaneni 6634984a38
Comments and Typo Fixes 2017-03-06 17:16:37 +05:30
Fabian Reinartz 9304179ef7 Merge branch 'master' into dev-2.0 2017-03-02 08:16:58 +01:00
Alex Somesan 18cd7246b5 Instrument query engine timings (#2418)
* Instrument query engine statistics
2017-02-13 16:45:00 +00:00
Fabian Reinartz 1d3cdd0d67 Merge branch 'master' into dev-2.0-rebase 2017-01-30 17:43:01 +01:00
André Carvalho c43dfaba1c Add max concurrent and current queries engine metrics (#2326)
* Add max concurrent and current queries engine metrics

This commit adds two metrics to the promql/engine: the
number of max concurrent queries, as configured by the flag, and
the number of current queries being served+blocked in the engine.
2017-01-07 14:41:25 +00:00
Fabian Reinartz bc20d93f0a storage: rename iterator value getters to At() 2017-01-02 13:33:37 +01:00
Fabian Reinartz 28f547bcc7 api/v1: fix tests, restore series queries 2016-12-30 10:43:44 +01:00
Fabian Reinartz f8fc1f5bb2 *: migrate ingestion to new batch Appender 2016-12-29 11:03:56 +01:00
Fabian Reinartz 71fe0c58a8 promql: misc fixes 2016-12-28 11:32:15 +01:00
Fabian Reinartz fecf9532b9 *: fix misc compile errors 2016-12-25 11:42:57 +01:00
Fabian Reinartz 0492ddbd4d *: fully decouple tsdb, add new storage interfaces 2016-12-25 01:43:22 +01:00
Fabian Reinartz 9ea10d5265 promql: use labels.Builder to modify labels 2016-12-24 14:35:24 +01:00
Fabian Reinartz c6cd998905 promql: use local labels, add conversion 2016-12-24 14:01:37 +01:00
Fabian Reinartz ff504af2aa promql: undo accidental exports 2016-12-24 11:41:37 +01:00
Fabian Reinartz 6dedf89cc3 promql: rename SampleStream to Series 2016-12-24 11:32:42 +01:00
Fabian Reinartz c5f225b920 promql: export Sample 2016-12-24 11:32:10 +01:00
Fabian Reinartz 65581a3d46 promql: export SmapleStream 2016-12-24 11:29:39 +01:00
Fabian Reinartz 6315d00942 promql: export String value 2016-12-24 11:25:26 +01:00
Fabian Reinartz ac5d3bc05e promql: scalar T/V and Point 2016-12-24 11:23:06 +01:00
Fabian Reinartz 09666e2e2a promql: make scalar public 2016-12-24 10:44:04 +01:00
Fabian Reinartz b3f71df350 promql: make matrix exported 2016-12-24 10:42:54 +01:00
Fabian Reinartz a62df87022 promql: rename vector 2016-12-24 10:40:09 +01:00
Fabian Reinartz 15a931dbdb promql: migrate model types, use tsdb interfaces 2016-12-24 00:39:52 +01:00
Tristan Colgate 68fc15fe4e Report type names in the form used in documentation 2016-11-18 10:12:55 +00:00
beorn7 4e3abc6cbf Simply use math.Mod(float64, float64) after all
This circumvents all the problems with int overflow, plus it is what was originally intended.
2016-11-08 21:03:31 +01:00
beorn7 5cf5bb427a Check for int64 overflow when converting from float64 2016-11-05 00:48:32 +01:00
beorn7 92c0ef1a92 Merge branch 'release-1.2' into beorn7/release 2016-11-03 22:48:39 +01:00
beorn7 07f1bdfe94 Fix MOD binop for scalars and vectors
Previously, a floating point number that would round down to 0 would
cause a "division by zero" panic.
2016-11-03 19:03:44 +01:00
Fabian Reinartz 8fa18d564a storage: enhance Querier interface usage
This extracts Querier as an instantiateable and closeable object
rather than just defining extending methods of the storage interface.
This improves composability and allows abstracting query transactions,
which can be useful for transaction-level caches, consistent data views,
and encapsulating teardown.
2016-10-16 10:39:29 +02:00
Julius Volz c187308366 storage: Contextify storage interfaces.
This is based on https://github.com/prometheus/prometheus/pull/1997.

This adds contexts to the relevant Storage methods and already passes
PromQL's new per-query context into the storage's query methods.
The immediate motivation supporting multi-tenancy in Frankenstein, but
this could also be used by Prometheus's normal local storage to support
cancellations and timeouts at some point.
2016-09-19 16:29:07 +02:00
Julius Volz ed5a0f0abe promql: Allow per-query contexts.
For Weaveworks' Frankenstein, we need to support multitenancy. In
Frankenstein, we initially solved this without modifying the promql
package at all: we constructed a new promql.Engine for every
query and injected a storage implementation into that engine which would
be primed to only collect data for a given user.

This is problematic to upstream, however. Prometheus assumes that there
is only one engine: the query concurrency gate is part of the engine,
and the engine contains one central cancellable context to shut down all
queries. Also, creating a new engine for every query seems like overkill.

Thus, we want to be able to pass per-query contexts into a single engine.

This change gets rid of the promql.Engine's built-in base context and
allows passing in a per-query context instead. Central cancellation of
all queries is still possible by deriving all passed-in contexts from
one central one, but this is now the responsibility of the caller. The
central query context is now created in main() and passed into the
relevant components (web handler / API, rule manager).

In a next step, the per-query context would have to be passed to the
storage implementation, so that the storage can implement multi-tenancy
or other features based on the contextual information.
2016-09-19 15:38:17 +02:00
beorn7 71571a8ec4 promql: Fix (and simplify) populating iterators
This was only relevant so far for the benchmark suite as it would
recycle Expr for repetitions. However, the append is unnecessary as
each node is only inspected once when populating iterators, and
population must always start from scratch.

This also introduces error checking during benchmarks and fixes the so
far undetected test errors during benchmarking.

Also, remove a style nit (two golint warnings less…).
2016-08-24 18:37:09 +02:00