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Author	SHA1	Message	Date
Matthieu MOREL	fb3eb21230	enable gocritic, unconvert and unused linters Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
Bryan Boreham	ff00dee262	tsdb: turn off transaction isolation for head compaction (#11317 ) * tsdb: add a basic test for read/write isolation * tsdb: store the min time with isolationAppender So that we can see when appending has moved past a certain point in time. * tsdb: allow RangeHead to have isolation disabled This will be used when for head compaction. * tsdb: do head compaction with isolation disabled This saves a lot of work tracking appends done while compaction is ongoing. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	136f8b0ebb	tsdb: comment reason for isolation tracking reads (#11301 ) I find it useful to know why a restriction exists, to check whether that reason still applies, or in which other places it might apply. This is based on the note here: https://github.com/prometheus/prometheus/pull/9270#pullrequestreview-743820956 on the PR where the original comment was added. Signed-off-by: Bryan Boreham <bjboreham@gmail.com> Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Darshan Chaudhary	9dcf8b2208	Add the ability to disable tsdb isolation (#9270 ) * Disable isolation in isolation struct Signed-off-by: darshanime <deathbullet@gmail.com> * Run tsdb tests with isolation disabled Signed-off-by: darshanime <deathbullet@gmail.com> * Check for isolation disabled in isoState.Close() Signed-off-by: darshanime <deathbullet@gmail.com> * use t.Skip to skip isolation tests when disabled Signed-off-by: darshanime <deathbullet@gmail.com> * address review comments Signed-off-by: darshanime <deathbullet@gmail.com> * fix test for defaultIsolationState Signed-off-by: darshanime <deathbullet@gmail.com> * Change flag name. Set flag in DB. Do not init txRing. Close isoState. Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Test disabled isolation in CircleCI test_go Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Skip isolation related tests in db_test.go Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>	3 years ago
Darshan Chaudhary	c4f2e9eec5	Add present_over_time (#9097 ) * Add present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Add tests for present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Address PR comments Signed-off-by: darshanime <deathbullet@gmail.com> * Add documentation for present_over_time Signed-off-by: darshanime <deathbullet@gmail.com> * Update documentation Signed-off-by: darshanime <deathbullet@gmail.com> * Update documentation comment Signed-off-by: darshanime <deathbullet@gmail.com>	3 years ago
Ganesh Vernekar	59d02b5ef0	tsdb: Block Head GC till pending readers are done reading (#9081 ) * tsdb: Block Head GC till pending readers are done reading Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix review comments Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix review comments 2 Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> * Fix the exclusiveness of maxt in WaitForPendingReadersInTimeRange Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>	3 years ago
Bryan Boreham	dc8f505595	tsdb: coalesce lock/unlock operations for append (#9061 ) Fetch the low watermark value under the same lock as we need for the appender, rather than releasing then re-aquiring a lock on the same Mutex. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	3 years ago
Peter Štibraný	ff80690a6e	Optimise lowWatermark in Isolation (#7332 ) * Track open appenders in doubly-linked list to make lowWatermark O(1). * Use RW locks. * Added BenchmarkIsolationWithState. Signed-off-by: Peter Štibraný <peter.stibrany@grafana.com>	5 years ago
beorn7	d9af11e636	Do not attempt isolation for appendID == 0 Signed-off-by: beorn7 <beorn@grafana.com>	5 years ago
beorn7	7f30b0984d	Implement isolation This has been ported from https://github.com/prometheus/tsdb/pull/306. Original implementation by @brian-brazil, explained in detail in the 2nd half of this talk: https://promcon.io/2017-munich/talks/staleness-in-prometheus-2-0/ The implementation was then processed by @gouthamve into the PR linked above. Relevant slide deck: https://docs.google.com/presentation/d/1-ICg7PEmDHYcITykD2SR2xwg56Tzf4gr8zfz1OerY5Y/edit?usp=drivesdk Signed-off-by: beorn7 <beorn@grafana.com> Co-authored-by: Brian Brazil <brian.brazil@robustperception.io> Co-authored-by: Goutham Veeramachaneni <gouthamve@gmail.com>	5 years ago