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81 Commits (eab78875fe791e908bbac6c1dfa20bf88a28b480)

Author SHA1 Message Date
Fabian Reinartz ad5812d83a Handle WAL corruption by truncating 
This adds handling for various corruption scenarios of the WAL.
If corruption is encountered, we truncate the WAL after the last valid
entry transparently and continue appending after the offset.
 2017-03-15 11:16:16 +01:00
Fabian Reinartz d3edfb5540 Test multiple full write/restore cylcles in WAL 2017-03-08 21:02:08 +01:00
Fabian Reinartz cb4dde7659 Fix WAL log recovery bug 
This fixes a bug where the last WAL file was closed after consuming it
instead of being left open for further writes.
Reloading of blocks on startup considers loading head blocks now.
 2017-03-08 16:53:07 +01:00
Fabian Reinartz 55a9b5428a Add separate head mutex 
Introduce a seperate mutex for the head blocks to avoid a race where
a post-compaction reload may run between switching the DB's base mutex
to create a new head block in an appender.
 2017-03-04 17:41:01 +01:00
Fabian Reinartz ffb24a98f4 Add missing unlock, run debug endpoint in benchmark 2017-03-02 21:54:02 +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 afa084920c Use Castagnoli polynomial for CRC32s; cache them 2017-02-15 21:13:17 -08:00
Fabian Reinartz 9c7a88223e Add full encode/decode WAL cycle test 2017-02-14 21:55:50 -08:00
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 9ddbd64d00 Move stats into meta.json file, cleanup, docs 2017-01-19 11:22:47 +01:00
Fabian Reinartz 343dd9d94c Fix wrong byte size in WAL base ref 2017-01-17 08:40:31 +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 0dffd52238 Use page writer in compaction 2017-01-09 18:47:43 +01:00
Fabian Reinartz 54f5027406 Put WAL lock down into encoder 2017-01-06 18:36:42 +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 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 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 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 7280533c42 Add basic shard metrics 2016-12-31 09:48:49 +01:00
Fabian Reinartz a009247ab7 Add matching of empty label 2016-12-30 19:36:28 +01:00
Fabian Reinartz 8aba95048a Rename to OpenHeadBlock 2016-12-22 20:00:24 +01:00
Fabian Reinartz e7edae39b2 Use page buffered writer for WAL 2016-12-22 16:14:34 +01:00
Fabian Reinartz 9c6a72aadd Load head with WALs correctly 2016-12-22 15:54:39 +01:00
Fabian Reinartz 1dde3b6d31 Add WAL decoder+loading and benchmarks 2016-12-22 15:18:33 +01:00
Fabian Reinartz 0b8c77361e Add initial WAL writing 2016-12-22 12:05:24 +01:00