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prometheus/tsdb
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Fiona Liao 9b83d8330a
Fix memSafeIterator.Seek() (#8748) 
* Add range query test cases

This includes a couple of failing ones that double count some points due
to the iterator seek bug.

Co-authored-by: Oleg Zaytsev <mail@olegzaytsev.com>
Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>

* Add Seek() implementation for memSafeIterator

Previously, calling memSafeIterator.Seek() would call the Seek() method
on its embedded iterator. This was causing the embedded iterator and the
memSafeIterator to get out of sync because when the embedded Seek()
moved to the next element of the embedded iterator, memSafeIterator
didn't "know" about it. memSafeIterator has to "know" when the embedded
iterator has moved to be able to work out when it should be reading from
its buffer rather than the embedded iterator.

Used same logic as for xorIterator.Seek() (which in runtime is used as
the embedded iterator) - return false if the iterator has an error and
try to move to next element if the required time hasn't been reached, or
if no elements have been read yet. The memSafeIterator.Next() method is
being called so memSafeIterator.i is always accurate.

Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>

* Add tsdb package test

Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>

Co-authored-by: Oleg Zaytsev <mail@olegzaytsev.com>
2021-04-27 00:43:22 +02:00
..
chunkenc Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
chunks Fixed TestChunkDiskMapper_WriteChunk_Chunk_IterateChunks for go1.16 (#8538) 2021-02-25 14:38:12 +05:30
docs/format Consistent naming and better names for fields in TSDB format docs (#8077) 2020-10-19 14:27:19 +05:30
encoding Avoid WriteAt for Postings. 2019-12-16 15:30:49 +00:00
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 tsdb: test for leaks (#7566) 2020-07-21 10:08:06 +02:00
index Add matchers to LabelValues() call (#8400) 2021-02-09 23:08:35 +05:30
record Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
test labels: Reduce allocated memory and latency of Hash method; Added tests. (#8025) 2020-10-15 11:31:28 +01:00
testdata tsdb: Delete blocks atomically; Remove tmp blocks on start; Added test. (#7772) 2020-08-11 06:56:08 +01:00
tombstones Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
tsdbutil Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
wal Fix golint issue caused by typo 2021-04-12 09:57:41 +08:00
.gitignore
block_test.go Combine Appender.Add and AddFast into a single Append method. (#8489) 2021-02-18 17:37:00 +05:30
block.go Rolling tombstones clean up (#8007) 2021-02-17 11:02:43 +05:30
blockwriter_test.go fix failing blockwriter tests 2021-03-01 06:16:05 -08:00
blockwriter.go add changes per comments, fix tests 2021-03-20 12:38:30 -07:00
CHANGELOG.md Rename default branch to main 2021-02-22 20:28:02 +01:00
compact_test.go Combine Appender.Add and AddFast into a single Append method. (#8489) 2021-02-18 17:37:00 +05:30
compact.go Add support for smaller block chunk segment allocations (#8478) 2021-04-15 14:25:01 +05:30
db_test.go Fix DB tests in the default branch 2021-02-18 23:56:27 +01:00
db.go Add support for smaller block chunk segment allocations (#8478) 2021-04-15 14:25:01 +05:30
exemplar_test.go Instrumented circular exemplar storage. (#8712) 2021-04-16 13:44:53 +01:00
exemplar.go Instrumented circular exemplar storage. (#8712) 2021-04-16 13:44:53 +01:00
head_bench_test.go TSDB: optimize series creation on PreCreation() failure (#8620) 2021-03-18 20:53:50 +05:30
head_test.go Fix memSafeIterator.Seek() (#8748) 2021-04-27 00:43:22 +02:00
head.go Fix memSafeIterator.Seek() (#8748) 2021-04-27 00:43:22 +02:00
isolation_test.go Optimise lowWatermark in Isolation (#7332) 2020-06-03 20:09:05 +02:00
isolation.go Optimise lowWatermark in Isolation (#7332) 2020-06-03 20:09:05 +02:00
mocks_test.go Move away from testutil, refactor imports (#8087) 2020-10-22 11:00:08 +02:00
querier_bench_test.go Combine Appender.Add and AddFast into a single Append method. (#8489) 2021-02-18 17:37:00 +05:30
querier_test.go Combine Appender.Add and AddFast into a single Append method. (#8489) 2021-02-18 17:37:00 +05:30
querier.go Correct spelling of "iterable" (#8713) 2021-04-12 21:43:42 +01:00
README.md Link blog post on TSDB queries in tsdb/README.md (#8391) 2021-01-21 17:14:40 +05:30
repair_test.go Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
repair.go MultiError: Refactored MultiError for more concise and safe usage. (#8066) 2020-10-28 15:24:58 +00:00
tsdbblockutil.go Combine Appender.Add and AddFast into a single Append method. (#8489) 2021-02-18 17:37:00 +05:30
wal_test.go Testify: move to require (#8122) 2020-10-29 09:43:23 +00:00
wal.go Update golangci-lint to 1.36.0 2021-02-04 08:53:33 -06:00

README.md

TSDB

GoDoc

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: