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106 Commits (cc0a7c82793515d6311801b7eb3ef8562e61f4c3)

Author SHA1 Message Date
Fabian Reinartz ffb24a98f4 Add missing unlock, run debug endpoint in benchmark 2017-03-02 21:54:02 +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 6c4217276f Periodically trigger compaction 
This addresses an issue where the compaction triggered on cutting
a new block doesn't find anything as the writers are still active on the
block that should be ready for compaction.
 2017-03-01 16:52:21 +01:00
Fabian Reinartz db5c88ea9a Misc compaction fixes 2017-02-28 08:40:51 +01:00
Fabian Reinartz b281e4e39b Accept prometheus.Registerer in constructor 2017-02-28 07:26:24 +01:00
Fabian Reinartz 306831f151 Add per-block state ULID 2017-02-27 10:46:15 +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 79944a5912 Break out WAL into segment files 2017-02-13 23:53:19 -08:00
Fabian Reinartz 987a90d149 Don't delete files if retention duration is 0 2017-02-11 11:49:17 -08:00
Fabian Reinartz 9c76624df2 Add initial retention cutoff 2017-02-09 17:54:26 -08:00
Fabian Reinartz f1435f2e2c Track appended samples properly in metric 2017-02-08 16:13:16 -08:00
Fabian Reinartz 012cf4ef25 Count writer references on head blocks 2017-02-04 11:53:52 +01:00
Fabian Reinartz 5a1c8eaa0e Fix missing appends after reference lookups 2017-02-02 11:10:17 +01:00
Fabian Reinartz f556036037 Close blocks before overwriting with compacted one 
This prevents the meta.json file of a compacted block
to be overwritten with data of the old block.
 2017-02-02 09:32:06 +01:00
Fabian Reinartz ac5229e1b4 Correctly write empty blocks and extend appenders by new blocks 2017-02-02 07:58:54 +01:00
Fabian Reinartz 42fa342229 Improve multi-head handling 
This improves handling of multiple head blocks. Configuration is
simplified to specify the number of concurrently appendable blocks.
 2017-02-01 21:35:21 +01:00
Fabian Reinartz 30efe4a58c Support writing to multiple head blocks 
This is an initial (and hacky) first pass on allowing
appending to multiple blocks simultaniously to avoid
dropping samples right after cutting a new head block.
It's also required for cases like the PGW, where a scrape may
contain varying timestamps.
 2017-02-01 15:57:28 +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 343dd9d94c Fix wrong byte size in WAL base ref 2017-01-17 08:40:31 +01:00
Fabian Reinartz dd0b69fe1b Export ErrNotFound 2017-01-16 14:18:32 +01:00
Fabian Reinartz 1c80c33e72 Fix bug of unsorted postings lists being created 
The former approach created unordered postings list by either
map iteration of new series being unsorted (fixable) or concurrent
writers creating new series interleaved.

We switch back to generating ephemeral references for a single batch.
Newly created series have to be re-set upon the next insert.
 2017-01-13 16:22:20 +01:00
Fabian Reinartz c7f5590a71 Ensure order of postings when adding new series 2017-01-13 15:25:11 +01:00
Fabian Reinartz d970f0256a Add Rollback() and docs to Appender interface 2017-01-12 20:17:49 +01:00
Fabian Reinartz 22db9c3413 Remove old appendBatch methods 2017-01-12 20:04:49 +01:00
Fabian Reinartz a317f252b9 Expose series references to clients 
This exposes a reference number of a series represented by a label set
to clients.
Subsequent samples can be directly added via the reference rather than
repeatedly passing in the full labels. This drasitcally speeds up the
append process.

The appender chain uses different sections of the reference number for
assignment to child appenders and invalidating reference numbers as
necessary.

Clients can either pass out reference numbers themselves or have their
own optimized lookup, i.e. by directly associating unparsed metric
descriptors strings with reference numbers.
 2017-01-12 20:00:54 +01:00
Fabian Reinartz c32a94d409 Unexport HeadBlock, export Block interface 2017-01-10 15:41:57 +01:00
Fabian Reinartz 29883a18fc Add own Appender() method for DB 2017-01-09 22:54:08 +01:00
Fabian Reinartz 142c89b8b0 Fix/update metrics 2017-01-09 19:14:21 +01:00
Fabian Reinartz 8c31c6e934 Make concurrent head chunk reads safe, fix misc races 
This adds a 4 sample buffer to every head chunk. The XOR
compression scheme may edit bytes in place. The minimum size
of a sample is 2 bits. So keeping the last 4 samples in an in-memory
buffer makes it safe to query the preceeding ones while samples
are added
 2017-01-09 16:51:39 +01:00
Fabian Reinartz 1943f8d1bb Fix head block stats races 2017-01-07 18:02:17 +01:00
Fabian Reinartz 300f4e2abf Use separate lock for series creation 
This uses the head block's own lock to only lock if new series were
encountered.
In the general append case we just need to hold a
 2017-01-06 18:10:50 +01:00
Fabian Reinartz 63e12807da Don't update head postings mapper on every append 2017-01-06 16:43:18 +01:00
Fabian Reinartz 71efd2e08d Periodically fsync WAL, make head cut async 2017-01-06 15:18:06 +01:00
Fabian Reinartz 2eb544c98e Change file names and maker parsing safer 2017-01-06 13:13:22 +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 937cdb579c Switch to sequential block names 
This changes block directory names from the int64 timestamp
to sequential numbering.
 2017-01-06 10:45:03 +01:00
Fabian Reinartz 4590b61343 Rename shard to partition 2017-01-06 08:08:02 +01:00
Fabian Reinartz 5aa7f7cce8 Compact head block into persisted block 2017-01-04 21:11:15 +01:00