prometheus

Commit Graph

Author	SHA1	Message	Date
Matthieu MOREL	bae9a21200	Merge branch 'main' into linter/nilerr Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
beorn7	5b53aa1108	style: Replace `else if` cascades with `switch` Wiser coders than myself have come to the conclusion that a `switch` statement is almost always superior to a statement that includes any `else if`. The exceptions that I have found in our codebase are just these two: * The `if else` is followed by an additional statement before the next condition (separated by a `;`). * The whole thing is within a `for` loop and `break` statements are used. In this case, using `switch` would require tagging the `for` loop, which probably tips the balance. Why are `switch` statements more readable? For one, fewer curly braces. But more importantly, the conditions all have the same alignment, so the whole thing follows the natural flow of going down a list of conditions. With `else if`, in contrast, all conditions but the first are "hidden" behind `} else if `, harder to spot and (for no good reason) presented differently from the first condition. I'm sure the aforemention wise coders can list even more reasons. In any case, I like it so much that I have found myself recommending it in code reviews. I would like to make it a habit in our code base, without making it a hard requirement that we would test on the CI. But for that, there has to be a role model, so this commit eliminates all `if else` occurrences, unless it is autogenerated code or fits one of the exceptions above. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
beorn7	c3c7d44d84	lint: Adjust to the lint warnings raised by current versions of golint-ci We haven't updated golint-ci in our CI yet, but this commit prepares for that. There are a lot of new warnings, and it is mostly because the "revive" linter got updated. I agree with most of the new warnings, mostly around not naming unused function parameters (although it is justified in some cases for documentation purposes – while things like mocks are a good example where not naming the parameter is clearer). I'm pretty upset about the "empty block" warning to include `for` loops. It's such a common pattern to do something in the head of the `for` loop and then have an empty block. There is still an open issue about this: https://github.com/mgechev/revive/issues/810 I have disabled "revive" altogether in files where empty blocks are used excessively, and I have made the effort to add individual `// nolint:revive` where empty blocks are used just once or twice. It's borderline noisy, though, but let's go with it for now. I should mention that none of the "empty block" warnings for `for` loop bodies were legitimate. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Matthieu MOREL	fb3eb21230	enable gocritic, unconvert and unused linters Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
Justin Lei	83f43982c9	Add support for native histograms to concreteSeriesIterator Signed-off-by: Justin Lei <justin.lei@grafana.com>	2 years ago
Abhijit Mukherjee	8f6d5dcd45	Fix: getting rid of EncOOOXOR chunk encoding (#12111 ) Signed-off-by: mabhi <abhijit.mukherjee@infracloud.io>	2 years ago
beorn7	1cfc8f65a3	histograms: Return actually useful counter reset hints This is a bit more conservative than we could be. As long as a chunk isn't the first in a block, we can be pretty sure that the previous chunk won't disappear. However, the incremental gain of returning NotCounterReset in these cases is probably very small and might not be worth the code complications. Wwith this, we now also pay attention to an explicitly set counter reset during ingestion. While the case doesn't show up in practice yet, there could be scenarios where the metric source knows there was a counter reset even if it might not be visible from the values in the histogram. It is also useful for testing. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
beorn7	57c18420ab	histograms: General readability tweaks - Adjust doc comments to go1.19 style. - Break down some overly long lines. - Minor doc comment tweaks and fixes. - Some renaming. Some rationales for the last point: I have renamed “interjections” into “inserts”, mostly because it is shorter, and the word shows up a lot by now (and the concept is cryptic enough to not obfuscate it even more with abbreviations). I have also tried to find more descriptive naming for the “compare spans” functions. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Mingjie Shao	78d3c4e823	tsdb: Fixed typo in Histogram Signed-off-by: Mingjie Shao <com.jerryshao@jerryshao.com>	2 years ago
beorn7	6dcd03dbf3	tsdb: Add integer gauge histogram support This follows what #11783 has done for float gauge histograms. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Ganesh Vernekar	57bcbf1888	Merge pull request #11783 from codesome/gauge-histogram tsdb: Add gauge histogram support	2 years ago
Ganesh Vernekar	3c2ea91a83	tsdb: Test gauge float histograms Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	609b12d719	tsdb: Support gauge float histogram with recoding of chunk Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	8ad0d2d5d7	tsdb: Find union of two sets of histogram spans Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	d7f5129042	tsdb: Add logic to determine appendable gauge float histograms This is to check if a gauge histogram can be appended to the given chunk. If not, it tells what changes to make to the chunk and the histogram if possible. Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	7ed1ddb338	tsdb: Improve TestHistogramChunkAppendable and add new cases Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	b42802af9a	tsdb: Improve TestFloatHistogramChunkAppendable and add new cases Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	6fd89a6fd2	Add chunk encoding for float histogram (#11716 ) Signed-off-by: Marc Tudurí <marctc@protonmail.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Marc Tudurí <marctc@protonmail.com>	2 years ago
beorn7	5f366e9b62	histograms: Improve tests and fix exposed bugs This adds negative buckets and access of float histograms to TestHistogramChunkSameBuckets and TestHistogramChunkBucketChanges. It also exercises a specific pattern of reusing an iterator (one where no access has happened). This exposes two bugs (where entries for positive buckets where used where the corresponding entries for negative buckets should have been used). One was fixed in #11627 (not merged), which triggered the work in this commit. This commit fixes both issues, so #11627 can be closed. It also simplifies the code in the histogramIterator.Next method that aims to recycle existing slice capacity. Furthermore, this is on top of the release-2.40 branch because we should probably cut a bugfix release for this. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Ganesh Vernekar	b8b0d45d69	Fix reset of a histogram chunk iterator Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Björn Rabenstein	503ffba49a	chunkenc: Slightly optimize xorWrite/xoRead (#11476 ) With these changes, the "happy path" when the leading and trailing number of bits don't need an update, fewer operations are needed. The change is probably very marginal (no change in the benchmark added here, but the benchmark also doesn't cover non-changing values), and an argument could me made that avoiding pointers also has its benefits. However, I think that reducing the number of return values improves readability. Which convinced me that I should at least propose this. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Ganesh Vernekar	507bfa46fd	Fix HistogramChunk's AtFloatHistogram() Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Signed-off-by: Jesus Vazquez	3362bf6d79	Fix merge conflicts Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Jesus Vazquez	e934d0f011	Merge 'main' into sparsehistogram Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com>	2 years ago
Bryan Boreham	d166da7b59	tsdb: stop saving a copy of last 4 samples in memSeries (#11296 ) * TSDB chunks: remove race between writing and reading Because the data is stored as a bit-stream, the last byte in the stream could change if the stream is appended to after an Iterator is obtained. Copy the last byte when the Iterator is created, so we don't have to read it later. Clarify in comments that concurrent Iterator and Appender are allowed, but the chunk must not be modified while an Iterator is created. (This was already the case, in order to copy the bstream slice header.) * TSDB: stop saving last 4 samples in memSeries This extra copy of the last 4 samples was introduced to avoid a race condition between reading the last byte of the chunk and writing to it. But now we have fixed that by having `bstreamReader` copy the last byte, we don't need to copy the last 4 samples. This change saves 56 bytes per series, which is very worthwhile when you have millions or tens of millions of series. * TSDB: tidy up stopIterator re-use Previous changes have left this code duplicating some lines; pull them out to a separate function and tidy up. * TSDB head_test: stop checking when iterators are wrapped The behaviour has changed so chunk iterators are only wrapped when transaction isolation requires them to stop short of the end. This makes tests fail which are checking the type. Tests should check the observable behaviour, not the type. Signed-off-by: Bryan Boreham <bjboreham@gmail.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Jesus Vazquez	c1b669bf9b	Add out-of-order sample support to the TSDB (#11075 ) * Introduce out-of-order TSDB support This implementation is based on this design doc: https://docs.google.com/document/d/1Kppm7qL9C-BJB1j6yb6-9ObG3AbdZnFUBYPNNWwDBYM/edit?usp=sharing This commit adds support to accept out-of-order ("OOO") sample into the TSDB up to a configurable time allowance. If OOO is enabled, overlapping querying are automatically enabled. Most of the additions have been borrowed from https://github.com/grafana/mimir-prometheus/ Here is the list ist of the original commits cherry picked from mimir-prometheus into this branch: - `4b2198d7ec` - `2836e5513f` - `00b379c3a5` - `ff0dc75758` - `a632c73352` - `c6f3d4ab33` - `5e8406a1d4` - `abde1e0ba1` - `e70e769889` - `df59320886` Co-authored-by: Jesus Vazquez <jesus.vazquez@grafana.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Dieter Plaetinck <dieter@grafana.com> Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * gofumpt files Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Add license header to missing files Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix OOO tests due to existing chunk disk mapper implementation Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix truncate int overflow Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Add Sync method to the WAL and update tests Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * remove useless sync Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Update minOOOTime after truncating Head * Update minOOOTime after truncating Head Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix lint Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Add a unit test Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Load OutOfOrderTimeWindow only once per appender Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix OOO Head LabelValues and PostingsForMatchers Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix replay of OOO mmap chunks Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Remove unnecessary err check Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Prevent panic with ApplyConfig Signed-off-by: Ganesh Vernekar 15064823+codesome@users.noreply.github.com Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Run OOO compaction after restart if there is OOO data from WBL Signed-off-by: Ganesh Vernekar 15064823+codesome@users.noreply.github.com Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Apply Bartek's suggestions Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com> Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Refactor OOO compaction Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Address comments and TODOs - Added a comment explaining why we need the allow overlapping compaction toggle - Clarified TSDBConfig OutOfOrderTimeWindow doc - Added an owner to all the TODOs in the code Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Run go format Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix remaining review comments Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix tests Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Change wbl reference when truncating ooo in TestHeadMinOOOTimeUpdate Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> * Fix TestWBLAndMmapReplay test failure on windows Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Address most of the feedback Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Refactor the block meta for out of order Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix windows error Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix review comments Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Signed-off-by: Jesus Vazquez <jesus.vazquez@grafana.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Signed-off-by: Ganesh Vernekar 15064823+codesome@users.noreply.github.com Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Dieter Plaetinck <dieter@grafana.com> Co-authored-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>	2 years ago
Björn Rabenstein	7ad36505d5	tsdb: Update comment about a possible space optimization (#11303 ) See also #11195 for the detailed reasoning. Signed-off-by: beorn7 <beorn@grafana.com> Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
Ganesh Vernekar	b2d01cbc57	Remove unnecessary code in encoding/decoding histograms (#11252 ) * Remove unnecessary code in encoding/decoding histograms Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix review comments Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
Ganesh Vernekar	0f4e5196c4	Implement vertical compaction for native histograms (#11184 ) * Implement vertical compaction for native histograms Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix typo Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	2 years ago
beorn7	49be0784b4	tsdb: Fix chunk handling during histogram recoding Previously, the maxTime wasn't updated properly in case of a recoding happening. My apologies for reformatting many lines for line length. During the bug hunt, I tried to make things more readable in a reasonably wide editor window. Signed-off-by: beorn7 <beorn@grafana.com>	2 years ago
beorn7	7ee1836ef5	Merge branch 'main' into sparsehistogram	3 years ago
Wilbert Guo	83a2e52bc2	Add SyncForState Implementation for Ruler HA (#10070 ) * continuously syncing activeAt for alerts Signed-off-by: Yijie Qin <qinyijie@amazon.com> Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> * add import Signed-off-by: Yijie Qin <qinyijie@amazon.com> Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> * Refactor SyncForState and add unit tests Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> * Format code Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> * Add hook for syncForState Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Fix go lint Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Refactor syncForState override implementation Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Add syncForState override func as argument to Update() Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Fix go formatting Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Fix circleci test errors Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> Remove overrideFunc as argument to run() Signed-off-by: Wilbert Guo <wilbeguo@amazon.com> * remove the syncForState Signed-off-by: Yijie Qin <qinyijie@amazon.com> * use the override function to decide if need to replace the activeAt or not Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix test case Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix format Signed-off-by: Yijie Qin <qinyijie@amazon.com> * Trigger build Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fixing comments Signed-off-by: Yijie Qin <qinyijie@amazon.com> * return the result of map of alerts instead of single one Signed-off-by: Yijie Qin <qinyijie@amazon.com> * upper case the QueryforStateSeries Signed-off-by: Yijie Qin <qinyijie@amazon.com> * use a more generic rule group post process function type Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix indentation Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix gofmt Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix lint Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fixing naming Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fix comments Signed-off-by: Yijie Qin <qinyijie@amazon.com> * add the lastEvalTimestamp as parameter Signed-off-by: Yijie Qin <qinyijie@amazon.com> * fmt Signed-off-by: Yijie Qin <qinyijie@amazon.com> * change funcType to func Signed-off-by: Yijie Qin <qinyijie@amazon.com> Co-authored-by: Yijie Qin <qinyijie@amazon.com> Co-authored-by: Yijie Qin <63399121+qinxx108@users.noreply.github.com>	3 years ago
beorn7	f9c411604d	Fix spelling errors Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Björn Rabenstein	7e42acd3b1	tsdb: Rework iterators (#9877 ) - Pick At... method via return value of Next/Seek. - Do not clobber returned buckets. - Add partial FloatHistogram suppert. Note that the promql package is now _only_ dealing with FloatHistograms, following the idea that PromQL only knows float values. As a byproduct, I have removed the histogramSeries metric. In my understanding, series can have both float and histogram samples, so that metric doesn't make sense anymore. As another byproduct, I have converged the sampleBuf and the histogramSampleBuf in memSeries into one. The sample type stored in the sampleBuf has been extended to also contain histograms even before this commit. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	5d4db805ac	Merge branch 'main' into sparsehistogram	3 years ago
beorn7	4c28d9fac7	Move to histogram.Histogram pointers This is to avoid copying the many fields of a histogram.Histogram all the time. This also fixes a bunch of formerly broken tests. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	8f92c90897	Add TODOs and some minor tweaks Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Dieter Plaetinck	d5bfbe3114	improve bstream comments and doc (#9560 ) * improve bstream comments and doc Signed-off-by: Dieter Plaetinck <dieter@grafana.com> * feedback Signed-off-by: Dieter Plaetinck <dieter@grafana.com>	3 years ago
beorn7	4998b9750f	chunkenc: Bugfix and naming tweaks Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	78ef9c6359	chunkenc: make xor reading more DRY Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	4a1b84f8b2	chunkenc: make xor writing more DRY Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Björn Rabenstein	3704c6c20a	Merge pull request #9533 from prometheus/beorn7/sparsehistogram tsdb: Complete chunk format documentation	3 years ago
beorn7	1a4e54cfbb	tsdb: Complete chunk format documentation This also tweaks and fixes a few things done previously. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	0876d57aea	chunkenc: Add test for chunk layout encoding And fix a bug exposed by it... Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	ad9b4c2b68	Fix typos Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	ed33aea392	Avoid redundant varint decoding in chunk appender construction Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	d31bb75dc4	Use VarbitUint rather than VarbitInt to encode len(spans) Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	3179215a59	Encode zero threshold first This guaranees that the zero threshold is byte-aligned. Not sure if that helps in any way, but at least it won't harm. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	c5522677bf	Improve encoding of zero threshold Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	7093b089f2	Use more varbit in histogram chunks This adds bit buckets for larger numbers to varbit encoding and also an unsigned version of varbit encoding. Then, varbit encoding is used for all the histogram chunk data instead of varint. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago

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104 Commits (8a34c43515fc0b9452ecf4f238c44a9f249d5da3)