prometheus

Commit Graph

Author	SHA1	Message	Date
Ganesh Vernekar	c806262206	Fix 'chunks.HeadReadWriter: maxt of the files are not set' error (#7856 ) * Fix chunks.HeadReadWriter: maxt of the files are not set Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	4 years ago
Yukun Sun	cfd4e05c9e	fix: return a corruption error when iterator function find a chunk that is out of sequence (#7855 ) Signed-off-by: sunyukun <sunyukun@didiglobal.com> Co-authored-by: sunyukun <sunyukun@didiglobal.com>	4 years ago
Max Neverov	bb5c6b38e2	Fix Possible Race Condition in TSDB (#7815 ) * Replace tsdb chunk mapper size with atomic; protect mmappedChunkFiles with read path mutex on DeleteCorrupted Signed-off-by: Max Neverov <neverov.max@gmail.com> * PR fixes Signed-off-by: Max Neverov <neverov.max@gmail.com>	4 years ago
Javier Palomo Almena	348ff4285f	tsdb: Replace sync/atomic with uber-go/atomic in tsdb (#7659 ) * tsdb/chunks: Replace sync/atomic with uber-go/atomic Signed-off-by: Javier Palomo <javier.palomo.almena@gmail.com> * tsdb/heaad: Replace sync/atomic with uber-go/atomic Signed-off-by: Javier Palomo <javier.palomo.almena@gmail.com> * vendor: Make go.uber.org/atomic a direct dependency There is no modifications to go.sum and vendor/ because it was already vendored. Signed-off-by: Javier Palomo <javier.palomo.almena@gmail.com> * tsdb: Remove comments referring to the sync/atomic alignment bug Related: https://golang.org/pkg/sync/atomic/#pkg-note-BUG Signed-off-by: Javier Palomo <javier.palomo.almena@gmail.com>	4 years ago
johncming	9801f52b0a	tsdb/chunks: fix bug of data race(#7643 ). (#7646 ) Signed-off-by: johncming <johncming@yahoo.com>	4 years ago
Ganesh Vernekar	b7c46a8c79	Merge remote-tracking branch 'upstream/master' into merge-release-2.19 Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago
Ganesh Vernekar	48fae12b89	Fix unsequential m-map files (#7414 ) * Fix unsequential m-map files Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago
Simon Pasquier	2f12049371	tsdb: improve logs when encountering corruption (#7308 ) * tsdb: improve logs when encountering corruption Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Wrap corrupted block errors Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Add file path to head chunks Signed-off-by: Simon Pasquier <spasquie@redhat.com>	5 years ago
Ganesh Vernekar	1627d234da	Moves the atomically accessed member to the top of the struct (#7365 ) * Moves the 64bit atomically accessed field to the top of the struct. Signed-off-by: Bryan Varner <1652015+bvarner@users.noreply.github.com> * Moves the 64bit atomically accessed field to the top of the struct. Signed-off-by: Bryan Varner <1652015+bvarner@users.noreply.github.com> * Fixing up go fmt formatting issues. Signed-off-by: Bryan Varner <1652015+bvarner@users.noreply.github.com> Co-authored-by: Bryan Varner <1652015+bvarner@users.noreply.github.com>	5 years ago
Ganesh Vernekar	a1355eb7c7	Remove time based m-map file creation (#7314 ) * Remove time based m-map file creation Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago
Ganesh Vernekar	83619aa9ac	Preallocate m-map file only for Windows (#7306 ) Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago
Krasimir Georgiev	09df8d94e0	More explicit chunks and head error handling. (#7277 )	5 years ago
Ganesh Vernekar	d4b9fe801f	M-map full chunks of Head from disk (#6679 ) When appending to the head and a chunk is full it is flushed to the disk and m-mapped (memory mapped) to free up memory Prom startup now happens in these stages - Iterate the m-maped chunks from disk and keep a map of series reference to its slice of mmapped chunks. - Iterate the WAL as usual. Whenever we create a new series, look for it's mmapped chunks in the map created before and add it to that series. If a head chunk is corrupted the currpted one and all chunks after that are deleted and the data after the corruption is recovered from the existing WAL which means that a corruption in m-mapped files results in NO data loss. [Mmaped chunks format](https://github.com/prometheus/prometheus/blob/master/tsdb/docs/format/head_chunks.md) - main difference is that the chunk for mmaping now also includes series reference because there is no index for mapping series to chunks. [The block chunks](https://github.com/prometheus/prometheus/blob/master/tsdb/docs/format/chunks.md) are accessed from the index which includes the offsets for the chunks in the chunks file - example - chunks of series ID have offsets 200, 500 etc in the chunk files. In case of mmaped chunks, the offsets are stored in memory and accessed from that. During WAL replay, these offsets are restored by iterating all m-mapped chunks as stated above by matching the series id present in the chunk header and offset of that chunk in that file. Prombench results _WAL Replay_ 1h Wal reply time 30% less wal reply time - 4m31 vs 3m36 2h Wal reply time 20% less wal reply time - 8m16 vs 7m _Memory During WAL Replay_ High Churn: 10-15% less RAM - 32gb vs 28gb 20% less RAM after compaction 34gb vs 27gb No Churn: 20-30% less RAM - 23gb vs 18gb 40% less RAM after compaction 32.5gb vs 20gb Screenshots are in [this comment](https://github.com/prometheus/prometheus/pull/6679#issuecomment-621678932) Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago
Ganesh Vernekar	e50fdbc70c	Live m-mapping of chunks on disk (#6830 ) * Live m-mapping of chunks on disk Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Part 2 Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Part 3 Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Fix review comments Part 4 Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Attempt to fix windows bug Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	5 years ago

14 Commits (3b08b2dabe22795a2296aee8b7a01d7a3e1505e7)