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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>
2022-12-12 00:08:23 +01:00
..
agent Merge remote-tracking branch 'upstream/main' into fix-conflict 2022-10-12 14:20:02 +05:30
chunkenc histograms: Improve tests and fix exposed bugs 2022-12-12 00:08:23 +01:00
chunks Replace sort.Strings and sort.Ints with faster slices.Sort (#11318) 2022-09-30 20:03:56 +05:30
docs Merge branch 'main' into sparsehistogram 2022-08-10 17:54:37 +02:00
encoding Merge 'main' into sparsehistogram 2022-10-05 22:14:49 +02:00
errors Address golint failures from revive 2021-10-23 00:53:11 +02:00
fileutil Update go to 1.19, set min version to 1.18 (#11279) 2022-09-07 11:30:48 +02:00
goversion Add new Go build tags. 2021-08-27 10:24:14 +02:00
index Replace sort.Strings and sort.Ints with faster slices.Sort (#11318) 2022-09-30 20:03:56 +05:30
record Merge 'main' into sparsehistogram 2022-10-05 22:14:49 +02:00
test Move packages out of deprecated pkg directory 2021-11-09 08:03:10 +01:00
testdata tsdb: Delete blocks atomically; Remove tmp blocks on start; Added test. (#7772) 2020-08-11 06:56:08 +01:00
tombstones refactor: move from io/ioutil to io and os packages (#10528) 2022-04-27 11:24:36 +02:00
tsdbutil Fix merge conflicts 2022-10-11 22:53:37 +05:30
wlog Merge remote-tracking branch 'upstream/main' into fix-conflict 2022-10-12 14:20:02 +05:30
.gitignore Moving tsdb into its own subdirectory 2019-08-13 13:58:49 +05:30
block_test.go Merge remote-tracking branch 'upstream/main' into fix-conflict 2022-10-12 14:20:02 +05:30
block.go tsdb: fix up sort call with faster slices.Sort (#11380) 2022-10-01 12:55:40 -04:00
blockwriter_test.go tsdb: in tests use labels.FromStrings 2022-09-09 13:34:49 +02:00
blockwriter.go Merge 'main' into sparsehistogram 2022-10-05 22:14:49 +02:00
CHANGELOG.md Rename default branch to main 2021-02-22 20:28:02 +01:00
compact_test.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
compact.go tsdb: Fix chunk handling during appendHistogram 2022-07-06 18:44:53 +02:00
db_test.go Add TestCompactHeadWithDeletion to test compaction failure after deletion 2022-11-23 17:31:18 +05:30
db.go Merge pull request #11447 from prometheus/sparsehistogram 2022-10-26 17:10:46 -04:00
example_test.go Merge branch 'main' into sparsehistogram 2022-05-04 13:37:13 +02:00
exemplar_test.go tsdb: in tests use labels.FromStrings 2022-09-09 13:34:49 +02:00
exemplar.go tsdb: use simpler map key to improve exemplar ingest performance (#10111) 2022-01-06 15:58:58 +05:30
head_append.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
head_bench_test.go Add out-of-order sample support to the TSDB (#11075) 2022-09-20 22:35:50 +05:30
head_read_test.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
head_read.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
head_test.go Fix the build after conflict resolution 2022-10-12 17:59:42 +05:30
head_wal.go Fix the build after conflict resolution 2022-10-12 17:59:42 +05:30
head.go Fix alignment of atomic int64 (#11547) 2022-11-09 11:18:49 +01:00
isolation_test.go tsdb: turn off transaction isolation for head compaction (#11317) 2022-09-27 19:31:23 +05:30
isolation.go tsdb: turn off transaction isolation for head compaction (#11317) 2022-09-27 19:31:23 +05:30
mocks_test.go Move packages out of deprecated pkg directory 2021-11-09 08:03:10 +01:00
ooo_head_read_test.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
ooo_head_read.go Add out-of-order sample support to the TSDB (#11075) 2022-09-20 22:35:50 +05:30
ooo_head_test.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
ooo_head.go Fix merge conflicts 2022-10-11 22:53:37 +05:30
querier_bench_test.go Add out-of-order sample support to the TSDB (#11075) 2022-09-20 22:35:50 +05:30
querier_test.go Merge 'main' into sparsehistogram 2022-10-05 22:14:49 +02:00
querier.go Do not error on empty chunk during iteration in populateWithDelChunkSeriesIterator 2022-11-23 17:32:28 +05:30
README.md Fixed broken link in tsdb README.md 2022-10-07 16:20:20 +00:00
repair_test.go tsdb: in tests use labels.FromStrings 2022-09-09 13:34:49 +02:00
repair.go refactor: move from io/ioutil to io and os packages (#10528) 2022-04-27 11:24:36 +02:00
tsdbblockutil.go Add unit test for histogram append and various querying scenarios (#11194) 2022-08-29 15:35:03 +05:30
wal_test.go TSDB: Rename wal package to wlog (#11352) 2022-10-10 20:38:46 +05:30
wal.go TSDB: Rename wal package to wlog (#11352) 2022-10-10 20:38:46 +05:30

README.md

TSDB

GoPkg

This directory contains the Prometheus TSDB (Time Series DataBase) library, which handles storage and querying of all Prometheus v2 data.

Documentation

External resources

A series of blog posts explaining different components of TSDB: