prometheus/tsdb
Oleg Zaytsev b1ed4a0a66
LabelNames API with matchers (#9083)
* Push the matchers for LabelNames all the way into the index.

NB This doesn't actually implement it in the index, just plumbs it through for now...

Signed-off-by: Tom Wilkie <tom@grafana.com>

* Hack it up.  Does not work.

Signed-off-by: Tom Wilkie <tom@grafana.com>

* Revert changes I don't understand

Can't see why do we need to hold a mutex on symbols, and the purpose of
the LabelNamesFor method.

Maybe I'll need to re-add this later.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Implement LabelNamesFor

This method provides the label names that appear in the postings
provided. We do that deeper than the label values because we know
beforehand that most of the label names we'll be the same across
different postings, and we don't want to go down an up looking up the
same symbols for all different series.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Mutex on symbols should be unlocked

However, I still don't understand why do we need a mutex here.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Fix head.LabelNamesFor

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Implement mockIndex LabelNames with matchers

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Nitpick on slice initialisation

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Add tests for LabelNamesWithMatchers

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Fix the mutex mess on head.LabelValues/LabelNames

I still don't see why we need to grab that unrelated mutex, but at least
now we're grabbing it consistently

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Check error after iterating postings

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Use the error from posting when there was en error in postings

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>
Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Update storage/interface.go comment

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>

* Update tsdb/index/index.go comment

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>

* Update tsdb/index/index.go wrapped error msg

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>

* Update tsdb/index/index.go wrapped error msg

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>

* Update tsdb/index/index.go warpped error msg

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>

* Remove unneeded comment

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Add testcases for LabelNames w/matchers in api.go

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

* Use t.Cleanup() instead of defer in tests

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>

Co-authored-by: Tom Wilkie <tom@grafana.com>
Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>
2021-07-20 18:08:08 +05:30
..
chunkenc Use binary literals for xor chunk encoding 2021-07-05 16:39:24 +02:00
chunks Stop the bleed on chunk mapper panic (#8723) 2021-05-06 14:18:59 -06:00
docs/format Add Exemplar Remote Write support (#8296) 2021-05-06 13:53:52 -07:00
encoding
errors MultiError: Refactored MultiError for more concise and safe usage. (#8066) 2020-10-28 15:24:58 +00:00
fileutil More info in mmap error message (#8058) 2020-10-15 12:58:13 +05:30
goversion
index LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
record Add Exemplar Remote Write support (#8296) 2021-05-06 13:53:52 -07:00
test labels: Reduce allocated memory and latency of Hash method; Added tests. (#8025) 2020-10-15 11:31:28 +01:00
testdata
tombstones Switched to go-kit/log 2021-06-11 12:28:36 -04:00
tsdbutil storage: Split chunks if more than 120 samples (#8582) 2021-05-18 18:37:16 +02:00
wal Switched to go-kit/log 2021-06-11 12:28:36 -04:00
.gitignore
block_test.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
block.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
blockwriter_test.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
blockwriter.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
CHANGELOG.md Rename default branch to main 2021-02-22 20:28:02 +01:00
compact_test.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
compact.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
db_test.go tsdb: Block Head GC till pending readers are done reading (#9081) 2021-07-20 14:17:20 +05:30
db.go tsdb: Block Head GC till pending readers are done reading (#9081) 2021-07-20 14:17:20 +05:30
exemplar_test.go Exemplar resize (#8974) 2021-07-20 10:22:57 +05:30
exemplar.go Exemplar resize (#8974) 2021-07-20 10:22:57 +05:30
head_bench_test.go React UI: Add Starting Screen (#8662) 2021-06-05 15:29:32 +01:00
head_test.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
head.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
isolation_test.go tsdb: Block Head GC till pending readers are done reading (#9081) 2021-07-20 14:17:20 +05:30
isolation.go tsdb: Block Head GC till pending readers are done reading (#9081) 2021-07-20 14:17:20 +05:30
mocks_test.go Move away from testutil, refactor imports (#8087) 2020-10-22 11:00:08 +02:00
querier_bench_test.go React UI: Add Starting Screen (#8662) 2021-06-05 15:29:32 +01:00
querier_test.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
querier.go LabelNames API with matchers (#9083) 2021-07-20 18:08:08 +05:30
README.md Replace godoc.org links 2021-06-17 07:18:51 -04:00
repair_test.go React UI: Add Starting Screen (#8662) 2021-06-05 15:29:32 +01:00
repair.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
tsdbblockutil.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
wal_test.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00
wal.go Switched to go-kit/log 2021-06-11 12:28:36 -04:00

TSDB

GoPkg

This directory contains the Prometheus storage layer that is used in its 2.x releases.

A writeup of its design can be found here.

Based on the Gorilla TSDB white papers.

Video: Storing 16 Bytes at Scale from PromCon 2017.

See also the format documentation.

A series of blog posts explaining different components of TSDB: