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38 commits

Author SHA1 Message Date
Fabian Reinartz a8e8903350 Use ChunkMeta references for clarity 
This has been a common source of hard to debug issues. Its a premature
and unbenchmarked optimization and semantically, we want ChunkMetas to
be references in all changed cases.
 2017-03-14 15:40:16 +01:00
Fabian Reinartz 04783831e2 Correctly close compacted blocks. 2017-03-06 09:33:55 +01:00
Fabian Reinartz 21b97d1e04 Fix compaction selection procedure 2017-03-02 15:10:13 +01:00
Fabian Reinartz 327e07e8d0 Properly sync moves and removes in compactor 2017-03-02 14:35:06 +01:00
Fabian Reinartz 92120448c2 Properly cleanup compacted dirs, fixes, docs 2017-03-02 14:32:09 +01:00
Fabian Reinartz 2c3e778d90 Compactor interface 2017-03-02 09:17:30 +01:00
Fabian Reinartz 2c3b56350a Write meta.json file atomically 2017-03-01 17:19:57 +01:00
Fabian Reinartz db5c88ea9a Misc compaction fixes 2017-02-28 08:40:51 +01:00
Fabian Reinartz 306831f151 Add per-block state ULID 2017-02-27 10:46:15 +01:00
Fabian Reinartz 9a5dfadb09 Tweak IndexWriter interface, serialize directly into dir 2017-02-25 07:24:20 +01:00
Fabian Reinartz 78780cd2ba Segment chunk file 
This adds write path support for segmented chunk data files.
Files of 512MB are pre-allocated and written to. If the file size
is exceeded, the next file is started. On completion, files
are truncated to their final size.
 2017-02-23 10:50:22 +01:00
Fabian Reinartz a3b47c4929 Create default logger for DB 2017-02-19 16:04:37 +01:00
Fabian Reinartz f734773214 Replace per-file locking with single PID lock file 
File locks have a multitude of problems that make them hard to use
correctly. As they are just advisory, they are only meaningful to
prevent accidents like running the same process twice.
A simple PID file lock works reliably in those cases and is simpler.
 2017-02-19 13:01:19 +01:00
Fabian Reinartz c808928b90 SeriesWriter -> ChunkWriter 
This commit simplifies a SeriesWriter into a ChunkWriter and detaches
it entirely from the notion of a series and the series index.
 2017-02-19 11:27:31 +01:00
Fabian Reinartz a61a31a5d7 compaction: add fast-path for compacting mem blocks 2017-01-30 09:49:36 +01:00
Fabian Reinartz c20cc44b06 Add docs, write sequence number to meta.json 2017-01-29 08:11:47 +01:00
Fabian Reinartz 30d8866c13 Limit compaction range, make cut and compact concurrent 2017-01-20 07:58:19 +01:00
Fabian Reinartz 67d185ceb9 Compact based on compaction generation 2017-01-19 19:45:52 +01:00
Fabian Reinartz d4779b374c Properly track and write meta file 2017-01-19 14:01:38 +01:00
Fabian Reinartz 9ddbd64d00 Move stats into meta.json file, cleanup, docs 2017-01-19 11:22:47 +01:00
Fabian Reinartz e006bc6dc6 Improve error messages, create regular dir for block 2017-01-19 08:40:15 +01:00
Fabian Reinartz d2322f6095 Improve compaction processing 2017-01-18 06:18:32 +01:00
Fabian Reinartz c32a94d409 Unexport HeadBlock, export Block interface 2017-01-10 15:41:57 +01:00
Fabian Reinartz 142c89b8b0 Fix/update metrics 2017-01-09 19:14:21 +01:00
Fabian Reinartz 1943f8d1bb Fix head block stats races 2017-01-07 18:02:17 +01:00
Fabian Reinartz c61b310210 Naive size-based compaction 
This adds naive compaction that tries to compact three
blocks of roughly equal size.
It decides based on samples present in a block and has no
safety measures considering the actual file size.
 2017-01-06 13:53:05 +01:00
Fabian Reinartz 96c2bd249f Handle compaction trigger and reinitializing in DB 2017-01-06 13:03:23 +01:00
Fabian Reinartz 3ed2c2a14b Rename Partition to regular DB, DB to PartitionedDB 2017-01-06 11:40:09 +01:00
Fabian Reinartz 4590b61343 Rename shard to partition 2017-01-06 08:08:02 +01:00
Fabian Reinartz 9790aa98ac Add postings wrapper that emits head postings in label set order 
This adds a position mapper that takes series from a head block
in the order they were appended and creates a mapping representing
them in order of their label sets.

Write-repair of the postings list would cause very expensive writing.
Hence, we keep them as they are and only apply the postition mapping
at the very end, after a postings list has been sufficienctly reduced
through intersections etc.
 2017-01-05 16:05:42 +01:00
Fabian Reinartz 5aa7f7cce8 Compact head block into persisted block 2017-01-04 21:11:15 +01:00
Fabian Reinartz ac49f8c15e Consolidate persistence and compaction 2017-01-03 16:49:37 +01:00
Fabian Reinartz e7f04d14d5 Lock mmapped files 2017-01-03 10:09:20 +01:00
Fabian Reinartz a648ef5252 Convert persister into function 2017-01-02 16:58:47 +01:00
Fabian Reinartz dbd2b21d2e Make persistence atomic 2017-01-02 14:41:13 +01:00
Fabian Reinartz 62b8ded0a5 Rename iterator value getters to At() 2017-01-02 13:33:06 +01:00
Fabian Reinartz beb842a856 Change block interface 
This changes the block interface to directly expose index
and series readers rather than the direct querier
 2017-01-02 11:12:28 +01:00
Fabian Reinartz 5d75a3dc7b Add basic compaction 
This adds a basic compactor that will merge two persisted blocks into
one. It simply fully rewrites the index and concatenates the chunk
lists.

It just writes into the current working dir and doesn't properly handle
which blocks to compact for now.
 2017-01-02 10:34:55 +01:00