Commit graph

153 commits

Author SHA1 Message Date
Bryan Boreham bded853035 [Test] TSDB: TestOOOCompaction with samples added after compaction starts
Test fails due to bug.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-08-05 10:35:34 +01:00
Bryan Boreham 5281a6bc1b TSDB: rebuild labels symbol-table on each compaction
Log begin/end for timing, plus some stats.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-07-05 10:19:07 +01:00
Bryan Boreham 348f7f8d0c
Merge pull request #14341 from charleskorn/charleskorn/cleanup-pending-read
Fix issue where pending OOO read can be left dangling if creating querier fails
2024-06-25 09:23:54 +01:00
Ben Ye 5585a3c7e5
tsdb: expose hook to customize block querier (#14114)
* expose hook for block querier

Signed-off-by: Ben Ye <benye@amazon.com>

* update comment

Signed-off-by: Ben Ye <benye@amazon.com>

* use defined type

Signed-off-by: Ben Ye <benye@amazon.com>

---------

Signed-off-by: Ben Ye <benye@amazon.com>
2024-06-25 09:47:06 +02:00
Charles Korn 2c5e88748e
Fix issue where pending OOO read can be left dangling if creating querier fails
Signed-off-by: Charles Korn <charles.korn@grafana.com>
2024-06-25 14:22:44 +10:00
Ben Ye 5a218708f1
tsdb: Extend compactor interface to allow compactions to create multiple output blocks (#14143)
* add hook to allow head compaction to create multiple output blocks

Signed-off-by: Ben Ye <benye@amazon.com>

* change Compact interface; remove BlockPopulator changes

Signed-off-by: Ben Ye <benye@amazon.com>

* rebase main

Signed-off-by: Ben Ye <benye@amazon.com>

* fix lint

Signed-off-by: Ben Ye <benye@amazon.com>

* fix unit test

Signed-off-by: Ben Ye <benye@amazon.com>

* address feedbacks; add unit test

Signed-off-by: Ben Ye <benye@amazon.com>

* Apply suggestions from code review

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Update tsdb/compact_test.go

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

---------

Signed-off-by: Ben Ye <benye@amazon.com>
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>
2024-06-12 17:31:25 -04:00
Ben Ye 8a08f452b6
tsdb: Allow passing a custom compactor to override the default one (#14113)
* expose hook in tsdb to allow customizing compactor

Signed-off-by: Ben Ye <benye@amazon.com>

* address comment

Signed-off-by: Ben Ye <benye@amazon.com>

---------

Signed-off-by: Ben Ye <benye@amazon.com>
2024-06-04 19:11:36 -04:00
Björn Rabenstein 3119b8a055
Merge pull request #13218 from machine424/ro-promtool
Make DBReadOnly more RO
2024-05-21 13:27:40 +02:00
Arve Knudsen d699dc3c77
Fix language in docs and comments (#14041)
Fix language in docs and comments

---------

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
Co-authored-by: Björn Rabenstein <github@rabenste.in>
2024-05-08 17:57:09 +02:00
machine424 c5a1cc9148
chore(tsdb): add a sandboxDir to DBReadOnly, the directory can be used for transient file writes.
use it in loadDataAsQueryable to make sure the RO Head doesn't truncate or cut new chunks in data/chunks_head/.

add a -sandbox-dir-root flag to "promtool tsdb dump/dump-openmetrics" to control the root of that sandbox dirrectory.

Signed-off-by: machine424 <ayoubmrini424@gmail.com>
2024-04-15 17:00:25 +02:00
Matthieu MOREL 6f595c6762
golangci-lint: enable whitespace linter (#13905)
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2024-04-11 09:27:54 +01:00
Jonathan Halterman 633224886a
Write out of order hint when initially creating meta file (#13894)
Signed-off-by: Jonathan Halterman <jonathan@grafana.com>
Signed-off-by: Jonathan Halterman <jhalterman@gmail.com>
Co-authored-by: Jesus Vazquez <jesusvazquez@users.noreply.github.com>
2024-04-08 17:34:14 +02:00
Łukasz Mierzwa 277f04f0c4
Stop compactions if there's a block to write (#13754)
* Stop compactions if there's a block to write

db.Compact() checks if there's a block to write with HEAD chunks before calling db.compactBlocks().
This is to ensure that if we need to write a block then it happens ASAP, otherwise memory usage might keep growing.

But what can also happen is that we don't need to write any block, we start db.compactBlocks(),
compaction takes hours, and in the meantime HEAD needs to write out chunks to a block.

This can be especially problematic if, for example, you run Thanos sidecar that's uploading block,
which requires that compactions are disabled. Then you disable Thanos sidecar and re-enable compactions.
When db.compactBlocks() is finally called it might have a huge number of blocks to compact, which might
take a very long time, during which HEAD cannot write out chunks to a new block.
In such case memory usage will keep growing until either:
- compactions are finally finished and HEAD can write a block
- we run out of memory and Prometheus gets OOM-killed

This change adds a check for pending HEAD block writes inside db.compactBlocks(), so that
we bail out early if there are still compactions to run, but we also need to write a new
block.

Also add a test for compactBlocks.

---------

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
Signed-off-by: Lukasz Mierzwa <lukasz@cloudflare.com>
2024-04-07 18:28:28 +01:00
carehabit a672662073
all: fix some typos (#13863)
Signed-off-by: carehabit <shenyuting@outlook.com>
2024-04-01 18:06:05 +02:00
Bartlomiej Plotka 25578f2b22
[test] Merge pull request #13790 from aknuds1/arve/retention-commit
tsdb.BeyondTimeRetention: Fix comment and test at retention duration
2024-03-26 12:26:32 +01:00
machine424 2a2e2ed28b
chore(tsdb): set the wbl to nil as well in DBReadOnly.loadDataAsQueryable
Signed-off-by: machine424 <ayoubmrini424@gmail.com>
2024-03-20 17:13:39 +01:00
Arve Knudsen 9c7a734063 tsdb.BeyondTimeRetention: Fix comment and test at retention duration
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2024-03-19 09:10:21 +01:00
Bryan Boreham a0e93e403e
Merge pull request #13764 from bboreham/remove-deprecated-wal
[Cleanup] TSDB: Remove old deprecated WAL implementation

Deprecated since 2018.
2024-03-17 09:34:57 +00:00
Darshan Chaudhary b7047f7fcb
Fix retention boundary so 2h retention deletes blocks right at the 2h boundary (#9633)
Signed-off-by: darshanime <deathbullet@gmail.com>
2024-03-15 19:35:16 +01:00
Bryan Boreham d45b5deb75 TSDB: move function only used in tests
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-03-15 08:54:47 +00:00
Bryan Boreham 3274cac0d3 TSDB: remove unused function
Was only used in old WAL implementation.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-03-15 08:51:57 +00:00
Bryan Boreham 87edf1f960 [Cleanup] TSDB: Remove old deprecated WAL implementation
Deprecated since 2018.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2024-03-13 15:57:23 +00:00
György Krajcsovits 4d4d822c36 Add native histograms to latency/duration metrics
Dogfood native histograms.
Allow dependent projects to migrate to native histograms.

I took the defaults from client_golang.

Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
2024-03-01 14:44:38 +01:00
machine424 f477e0539a
Move from golang.org/x/exp/slices into slices now that we only support Go >= 1.21
Prevent adding back golang.org/x/exp/slices.

Signed-off-by: machine424 <ayoubmrini424@gmail.com>
2024-02-28 14:54:53 +01:00
Marco Pracucci 501bc6419e
Add ShardedPostings() support to TSDB (#10421)
This PR is a reference implementation of the proposal described in #10420.

In addition to what described in #10420, in this PR I've introduced labels.StableHash(). The idea is to offer an hashing function which doesn't change over time, and that's used by query sharding in order to get a stable behaviour over time. The implementation of labels.StableHash() is the hashing function used by Prometheus before stringlabels, and what's used by Grafana Mimir for query sharding (because built before stringlabels was a thing).

Follow up work
As mentioned in #10420, if this PR is accepted I'm also open to upload another foundamental piece used by Grafana Mimir query sharding to accelerate the query execution: an optional, configurable and fast in-memory cache for the series hashes.

Signed-off-by: Marco Pracucci <marco@pracucci.com>
2024-01-29 11:57:27 +00:00
Giedrius Statkevičius b695e069b8
tsdb/main: wire "EnableOverlappingCompaction" to tsdb.Options (#13398)
This added the https://github.com/prometheus/prometheus/pull/13393
"EnableOverlappingCompaction" parameter to the compactor code but not to
the tsdb.Options. I forgot about that. Add it to `tsdb.Options` too and
set it to `true` in Prometheus.

Copy/paste the description from
https://github.com/prometheus/prometheus/pull/13393#issuecomment-1891787986

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
2024-01-15 16:42:40 +01:00
Giedrius Statkevičius 61b4080a14
tsdb/{index,compact}: allow using custom postings encoding format (#13242)
* tsdb/{index,compact}: allow using custom postings encoding format

We would like to experiment with a different postings encoding format in
Thanos so in this change I am proposing adding another argument to
`NewWriter` which would allow users to change the format if needed.
Also, wire the leveled compactor so that it would be possible to change
the format there too.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>

* tsdb/compact: use a struct for leveled compactor options

As discussed on Slack, let's use a struct for the options in leveled
compactor.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>

* tsdb: make changes after Bryan's review

- Make changes less intrusive
- Turn the postings encoder type into a function
- Add NewWriterWithEncoder()

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>

---------

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
2024-01-08 09:48:27 +00:00
Giedrius Statkevičius f36b56a62c
tsdb: remove unused option (#13282)
Digging around the TSDB code and I've found that this flag is unused so
let's remove it.

Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@vinted.com>
2023-12-12 09:58:54 +00:00
Matthieu MOREL 8f6cf3aabb tsdb: use Go standard errors
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2023-12-11 12:18:54 +00:00
Charles Korn 59844498f7
Fix issue where queries can fail or omit OOO samples if OOO head compaction occurs between creating a querier and reading chunks (#13115)
* Add failing test.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Don't run OOO head garbage collection while reads are running.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Add further test cases for different order of operations.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Ensure all queriers are closed if `DB.blockChunkQuerierForRange()` fails.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Ensure all queriers are closed if `DB.Querier()` fails.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Invert error handling in `DB.Querier()` and `DB.blockChunkQuerierForRange()` to make it clearer

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Ensure that queries that touch OOO data can't block OOO head garbage collection forever.

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Address PR feedback: fix parameter name in comment

Co-authored-by: Jesus Vazquez <jesusvazquez@users.noreply.github.com>
Signed-off-by: Charles Korn <charleskorn@users.noreply.github.com>

* Address PR feedback: use `lastGarbageCollectedMmapRef`

Signed-off-by: Charles Korn <charles.korn@grafana.com>

* Address PR feedback: ensure pending reads are cleaned up if creating an OOO querier fails

Signed-off-by: Charles Korn <charles.korn@grafana.com>

---------

Signed-off-by: Charles Korn <charles.korn@grafana.com>
Signed-off-by: Charles Korn <charleskorn@users.noreply.github.com>
Co-authored-by: Jesus Vazquez <jesusvazquez@users.noreply.github.com>
2023-11-24 12:38:38 +01:00
Matthieu MOREL dd8871379a remplace errors.Errorf by fmt.Errorf
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2023-11-14 13:04:31 +00:00
Márcio Carôso dff1c395f6
Expose --storage.tsdb.retention.time in metric prometheus_tsdb_retention_limit_seconds (#12986)
* Expose --storage.tsdb.retention.time in a metric

Signed-off-by: Marcio Caroso <msscaroso@gmail.com>

---------

Signed-off-by: Marcio Caroso <msscaroso@gmail.com>
2023-10-24 13:34:42 +02:00
George Krajcsovits 7d7b9eacff
Fix int32 overflow issues (#12978)
On a 32 bit architecture the size of int is 32 bits. Thus converting from
int64, uint64 can overflow it and flip the sign.

Try for yourself in playground:
package main

import "fmt"

func main() {
	x := int64(0x1F0000001)
	y := int64(1)
	z := int32(x - y) // numerically this is 0x1F0000000
	fmt.Printf("%v\n", z)
}

Prints -268435456 as if x was smaller.

Followup to #12650

Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
2023-10-16 16:23:26 +02:00
Ganesh Vernekar f5913266a1
Additionally wrap WBL replay error (#12406)
* Additionally wrap WBL replay error

Although WBL replay is already wrapped with errLoadWbl,
there are other errors that can happen during a WBL replay.
We should not try to repair WAL in those cases.

This commit additionally wraps the final error in Head.Init again
with errLoadWbl so that WBL replay errors can be identified properly.

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
Signed-off-by: Jesus Vazquez <jesusvzpg@gmail.com>
Co-authored-by: Jesus Vazquez <jesusvzpg@gmail.com>
2023-10-13 14:21:35 +02:00
Goutham Veeramachaneni 86729d4d7b
Update exp package (#12650) 2023-09-21 22:53:51 +02:00
Arve Knudsen 4451ba10b4
Add context argument to IndexReader.Postings (#12667)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2023-09-13 17:45:06 +02:00
Arve Knudsen 6ef9ed0bc3
Add context argument to DB.Delete (#12834)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2023-09-13 15:43:06 +02:00
Arve Knudsen 6daee89e5f
Add context argument to Querier.Select (#12660)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2023-09-12 12:37:38 +02:00
Bryan Boreham 0d283effa8 promql: force mmap of head chunks in BenchmarkRangeQuery
Otherwise we have a highly unusual situation of over 100 chunks
in the headChunks list of each series, which heavily skews
performance.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2023-08-26 09:40:59 +00:00
Julien Pivotto e3fabd5fdf
Merge pull request #12664 from prometheus/superq/cleanup_chunk_snapshots
Cleanup temporary chunk snapshot dirs
2023-08-08 13:02:39 +02:00
SuperQ 8d38d59fc5
Cleanup temporary chunk snapshot dirs
Simlar to cleanup of WAL files on startup, cleanup temporary
chunk_snapshot dirs. This prevents storage space leaks due to terminated
snapshots on shutdown.

Signed-off-by: SuperQ <superq@gmail.com>
2023-08-08 09:43:48 +02:00
Łukasz Mierzwa 3c80963e81
Use a linked list for memSeries.headChunk (#11818)
Currently memSeries holds a single head chunk in-memory and a slice of mmapped chunks.
When append() is called on memSeries it might decide that a new headChunk is needed to use for given append() call.
If that happens it will first mmap existing head chunk and only after that happens it will create a new empty headChunk and continue appending
our sample to it.

Since appending samples uses write lock on memSeries no other read or write can happen until any append is completed.
When we have an append() that must create a new head chunk the whole memSeries is blocked until mmapping of existing head chunk finishes.
Mmapping itself uses a lock as it needs to be serialised, which means that the more chunks to mmap we have the longer each chunk might wait
for it to be mmapped.
If there's enough chunks that require mmapping some memSeries will be locked for long enough that it will start affecting
queries and scrapes.
Queries might timeout, since by default they have a 2 minute timeout set.
Scrapes will be blocked inside append() call, which means there will be a gap between samples. This will first affect range queries
or calls using rate() and such, since the time range requested in the query might have too few samples to calculate anything.

To avoid this we need to remove mmapping from append path, since mmapping is blocking.
But this means that when we cut a new head chunk we need to keep the old one around, so we can mmap it later.
This change makes memSeries.headChunk a linked list, memSeries.headChunk still points to the 'open' head chunk that receives new samples,
while older, yet to be mmapped, chunks are linked to it.
Mmapping is done on a schedule by iterating all memSeries one by one. Thanks to this we control when mmapping is done, since we trigger
it manually, which reduces the risk that it will have to compete for mmap locks with other chunks.

Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
2023-07-31 11:10:24 +02:00
Justin Lei 32d87282ad
Add Zstandard compression option for wlog (#11666)
Snappy remains as the default compression but there is now a flag to switch 
the compression algorithm.

Signed-off-by: Justin Lei <justin.lei@grafana.com>
2023-07-11 14:57:57 +02:00
Bryan Boreham 5255bf06ad Replace sort.Slice with faster slices.SortFunc
The generic version is more efficient.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2023-07-02 22:17:08 +00:00
Nidhey Nitin Indurkar a8772a4178
Feat: Get block by id directly on promtool analyze & get latest block if ID not provided (#12031)
* feat: analyze latest block or block by ID in CLI (promtool)

Signed-off-by: nidhey27 <nidhey.indurkar@infracloud.io>

* address remarks

Signed-off-by: nidhey60@gmail.com <nidhey.indurkar@infracloud.io>

* address latest review comments

Signed-off-by: nidhey60@gmail.com <nidhey.indurkar@infracloud.io>

---------

Signed-off-by: nidhey27 <nidhey.indurkar@infracloud.io>
Signed-off-by: nidhey60@gmail.com <nidhey.indurkar@infracloud.io>
2023-06-01 17:13:09 +05:30
zenador 37e5249e33
Use DefaultSamplesPerChunk in tsdb (#12387)
Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
2023-05-24 13:00:21 +02:00
Callum Styan 0d2108ad79
[tsdb] re-implement WAL watcher to read via a "notification" channel (#11949)
* WIP implement WAL watcher reading via notifications over a channel from
the TSDB code

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

* Notify via head appenders Commit (finished all WAL logging) rather than
on each WAL Log call

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

* Fix misspelled Notify plus add a metric for dropped Write notifications

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

* Update tests to handle new notification pattern

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

* this test maybe needs more time on windows?

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

* does this test need more time on windows as well?

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

* read timeout is already a time.Duration

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

* remove mistakenly commited benchmark data files

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

* address some review feedback

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

* fix missed changes from previous commit

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

* Fix issues from wrapper function

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

* try fixing race condition in test by allowing tests to overwrite the
read ticker timeout instead of calling the Notify function

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

* fix linting

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

---------

Signed-off-by: Callum Styan <callumstyan@gmail.com>
2023-05-15 12:31:49 -07:00
Björn Rabenstein 37fe9b89dc
Merge pull request #12055 from leizor/leizor/prometheus/issues/12009
Adjust samplesPerChunk from 120 to 220
2023-05-10 14:45:12 +02:00
cui fliter 276ca6a883 fix some comments
Signed-off-by: cui fliter <imcusg@gmail.com>
2023-04-25 14:19:16 +08:00
Matthieu MOREL bae9a21200
Merge branch 'main' into linter/nilerr
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
2023-04-19 19:56:39 +02:00