prometheus

Commit Graph

Author	SHA1	Message	Date
George Krajcsovits	3512b2d678	storage: make histogram reset handling consistent in chainSampleIterator (#12779 ) storage: make histogram reset handling consistent in chainSampleIterator --------- Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	1 year ago
Justin Lei	8ef7dfdeeb	Add a chunk size limit in bytes (#12054 ) Add a chunk size limit in bytes This creates a hard cap for XOR chunks of 1024 bytes. The limit for histogram chunk is also 1024 bytes, but it is a soft limit as a histogram has a dynamic size, and even a single one could be larger than 1024 bytes. This also avoids cutting new histogram chunks if the existing chunk has fewer than 10 histograms yet. In that way, we are accepting "jumbo chunks" in order to have at least 10 histograms in a chunk, allowing compression to kick in. Signed-off-by: Justin Lei <justin.lei@grafana.com>	1 year ago
George Krajcsovits	f5fcaa3872	Fix setting reset header to gauge histogram in seriesToChunkEncoder (#12329 ) Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	2 years ago
Filip Petkovski	0d049feac7	Fix encoding samples in ChunkSeries (#12185 ) The storage.ChunkSeries iterator assumes that a histogram sample can always be appended to the currently open chunk. This is not the case when there is a counter reset, or when appending a stale sample to a chunk with non-stale samples. In addition, the open chunk sometimes needs to be recoded before a sample can be appended. This commit addresses the issue by implementing a RecodingAppender which can recode incoming samples in a transparent way. It also detects cases when a sample cannot be appended at all and returns `false` so that the caller can open a new chunk. Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
beorn7	630bcb494b	storage: Use separate sample types for histogram vs. float Previously, we had one “polymorphous” `sample` type in the `storage` package. This commit breaks it up into `fSample`, `hSample`, and `fhSample`, each still implementing the `tsdbutil.Sample` interface. This reduces allocations in `sampleRing.Add` but inflicts the penalty of the interface wrapper, which makes things worse in total. This commit therefore just demonstrates the step taken. The next commit will tackle the interface overhead problem. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Bryan Boreham	faac4c066d	package storage: fix up test not to access Labels internals Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
sniper91	16738b00e3	Do no re-use result slice in chunkSetToSeriesSet This is required to preserve the interface property of SeriesSet that says "At returns full series. Returned series should be iterable even after Next is called." Signed-off-by: sniper91 <kevinzhao91@outlook.com>	2 years ago
beorn7	86cc83b13c	storage: iterator fixes after merge Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	b042e29569	storage: expose bug in iterators #10027 Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	68e02be963	Post-merge fixes Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Björn Rabenstein	b866db009b	storage: Fix and improve the Seek method of various iterators (#9878 ) There was a subtle and nasty bug in listSeriesIterator.Seek. In addition, the Seek call is defined to be a no-op if the current position of the iterator is already pointing to a suitable sample. This commit adds fast paths for this case to several potentially expensive Seek calls. Another bug was in concreteSeriesIterator.Seek. It always searched the whole series and not from the current position of the iterator. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Bartlomiej Plotka	e6d7cc5fa4	tsdb: Added ChunkQueryable implementations to db; unified MergeSeriesSets and vertical to single struct. (#7069 ) * tsdb: Added ChunkQueryable implementations to db; unified compactor, querier and fanout block iterating. Chained to https://github.com/prometheus/prometheus/pull/7059 * NewMerge(Chunk)Querier now takies multiple primaries allowing tsdb DB code to use it. * Added single SeriesEntry / ChunkEntry for all series implementations. * Unified all vertical, and non vertical for compact and querying to single merge series / chunk sets by reusing VerticalSeriesMergeFunc for overlapping algorithm (same logic as before) * Added block (Base/Chunk/)Querier for block querying. We then use populateAndTomb(Base/Chunk/) to iterate over chunks or samples. * Refactored endpoint tests and querier tests to include subtests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed comments from Brian and Beorn. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed snapshot test and added chunk iterator support for DBReadOnly. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed race when iterating over Ats first. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed tests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed populate block tests. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed endpoints test. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed test. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added test & fixed case of head open chunk. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed DBReadOnly tests and bug producing 1 sample chunks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added cases for partial block overlap for multiple full chunks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Added extra tests for chunk meta after compaction. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Fixed small vertical merge bug and added more tests for that. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	4 years ago
Bartlomiej Plotka	b788986717	storage: Adjusted fully storage layer support for chunk iterators: Remote read client, readyStorage, fanout. (#7059 ) * Fixed nits introduced by https://github.com/prometheus/prometheus/pull/7334 * Added ChunkQueryable implementation to fanout and readyStorage. * Added more comments. * Changed NewVerticalChunkSeriesMerger to CompactingChunkSeriesMerger, removed tiny interface by reusing VerticalSeriesMergeFunc for overlapping algorithm for both chunks and series, for both querying and compacting (!) + made sure duplicates are merged. * Added ErrChunkSeriesSet * Added Samples interface for seamless []promb.Sample to []tsdbutil.Sample conversion. * Deprecating non chunks serieset based StreamChunkedReadResponses, added chunk one. * Improved tests. * Split remote client into Write (old storage) and read. * Queryable client is now SampleAndChunkQueryable. Since we cannot use nice QueryableFunc I moved all config based options to sampleAndChunkQueryableClient to aboid boilerplate. In next commit: Changes for TSDB. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	4 years ago
Bartlomiej Plotka	d5c33877f9	storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. (#7005 ) * storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. ## Rationales: In many places (e.g. chunk Remote read, Thanos Receive fetching chunk from TSDB), we operate on encoded chunks not samples. This means that we unnecessary decode/encode, wasting CPU, time and memory. This PR adds chunk iterator interfaces and makes the merge code to be reused between both seriesSets I will make the use of it in following PR inside tsdb itself. For now fanout implements it and mergers. All merges now also allows passing series mergers. This opens doors for custom deduplications other than TSDB vertical ones (e.g. offline one we have in Thanos). ## Changes * Added Chunk versions of all iterating methods. It all starts in Querier/ChunkQuerier. The plan is that Storage will implement both chunked and samples. * Added Seek to chunks.Iterator interface for iterating over chunks. * NewMergeChunkQuerier was added; Both this and NewMergeQuerier are now using generigMergeQuerier to share the code. Generic code was added. * Improved tests. * Added some TODO for further simplifications in next PRs. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Brian's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Moved s/Labeled/SeriesLabels as per Krasi suggestion. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Krasi's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Second iteration of Krasi comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Another round of comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago

15 Commits (cef8aca8e8989ced6c1a493a3f3dd5e485206f92)