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Author SHA1 Message Date
Fabian Reinartz
2c97428a79 Add basic WAL tests 2017-02-14 16:12:56 -08:00
Fabian Reinartz
84e8027a8e Close consumed WAL segments, verify checksums on read 2017-02-14 00:42:06 -08:00
Fabian Reinartz
eeb03e97e2 Add headers and format flag for WAL segments 2017-02-14 00:24:53 -08:00
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
472c618c39 Drop out-of-bound samples 2017-01-19 15:03:57 +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
2f02f86b62 Fix WAL tests 2017-01-19 08:48:11 +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
5ceca3c810 Write to WAL before appending to memory storage 2017-01-17 16:33:58 +01:00
Fabian Reinartz
343dd9d94c Fix wrong byte size in WAL base ref 2017-01-17 08:40:31 +01:00
Fabian Reinartz
5fb01d41aa Use new Prometheus text format parser 2017-01-16 21:29:53 +01:00
Fabian Reinartz
dd0b69fe1b Export ErrNotFound 2017-01-16 14:18:32 +01:00
Fabian Reinartz
9cf49f68e9 wal: use larger buffer 2017-01-16 14:18:25 +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
fde69dab49 Use buffer pool for head appenders 2017-01-12 20:03:44 +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
5e028710d5 Add fast past to validation after lock switch 2017-01-12 15:51:08 +01:00
Fabian Reinartz
1b39887baa Revalidate series existance after lock switch 2017-01-11 14:05:58 +01:00
Fabian Reinartz
ca5791efbc Simplify creation of new series 2017-01-11 13:58:26 +01:00
Fabian Reinartz
0ca755b4ae Replace single head chunk per series with memSeries 
This adds a memory series holding several chunk to replace
the single head chunk per series so far.
This is necessary for uniform maximum chunk sizes in cases
where some series have higher frequency samples than others.
 2017-01-11 13:02:38 +01:00
Fabian Reinartz
80affd98a8 Add barrier to benchmark writer 
This adds a barrier to avoid issues with unfair goroutine scheduling
that causes some fake scrapers to run away from the other ones.
 2017-01-11 13:01:30 +01:00
Fabian Reinartz
c32a94d409 Unexport HeadBlock, export Block interface 2017-01-10 15:41:57 +01:00
Fabian Reinartz
d86e8a63c7 Report correct number of appended samples 2017-01-10 11:17:37 +01:00
Fabian Reinartz
29883a18fc Add own Appender() method for DB 2017-01-09 22:54:08 +01:00
Fabian Reinartz
4c4e0c614e Simplify position mapper updating 2017-01-09 19:24:05 +01:00
Fabian Reinartz
142c89b8b0 Fix/update metrics 2017-01-09 19:14:21 +01:00
Fabian Reinartz
0dffd52238 Use page writer in compaction 2017-01-09 18:47:43 +01:00
Fabian Reinartz
89d8467f5c Add missing lock 2017-01-09 18:07:45 +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
6aa922c5a6 Fix races 2017-01-07 16:20:32 +01:00
Fabian Reinartz
54f5027406 Put WAL lock down into encoder 2017-01-06 18:36:42 +01:00