15 Commits (b6f89a198284a222f23bd58b59fa93b71ed44bac)

Author	SHA1	Message	Date
beorn7	c53f256a09	storage: Fix use of counter (Set -> Add)	8 years ago
beorn7	a90d645378	Checkpoint fingerprint mappings only upon shutdown ... Before, we checkpointed after every newly detected fingerprint collision, which is not a problem as long as collisions are rare. However, with a sufficient number of metrics or particular nature of the data set, there might be a lot of collisions, all to be detected upon the first set of scrapes, and then the checkpointing after each detection will take a quite long time (it's O(n²), essentially). Since we are rebuilding the fingerprint mapping during crash recovery, the previous, very conservative approach didn't even buy us anything. We only ever read from the checkpoint file after a clean shutdown, so the only time we need to write the checkpoint file is during a clean shutdown.	9 years ago
Jonathan Boulle	38098f8c95	Add missing license headers ... Prometheus is Apache 2 licensed, and most source files have the appropriate copyright license header, but some were missing it without apparent reason. Correct that by adding it.	9 years ago
Fabian Reinartz	e3b6ec9784	Switch to common/log	9 years ago
Fabian Reinartz	306e8468a0	Switch from client_golang/model to common/model	9 years ago
beorn7	dbcb3d9333	Use an RW lock to checkpoint fingerprint mappings. ... This has to be backported to 0.13.x.	10 years ago
beorn7	3b9ab546e6	Add metrics to count inconsistencies and fp collisions.	10 years ago
Björn Rabenstein	c44e7cd105	Merge pull request #706 from prometheus/beorn7/persistence2 ... Improve iterator performance.	10 years ago
Fabian Reinartz	112a778922	Align int64s for atomic operations	10 years ago
beorn7	3b9c421a69	Weed out all the [Gg]et* method names. ... The only exception is getNumChunksToPersist to avoid naming the struct member numChunksToPersist in a weird way.	10 years ago
Julius Volz	267fd34156	Switch Prometheus to use github.com/prometheus/log. ... This change is conceptually very simple, although the diff is large. It switches logging from "github.com/golang/glog" to "github.com/prometheus/log", while not actually changing any log messages. V(1)-style logging has been changed to be log.Debug*().	10 years ago
beorn7	7c6466d476	Reserve only ~1M FPs for the mapping. ... That reduces the chance of having a fingerprint in the reserved area.	10 years ago
beorn7	ac75dc2812	Avoid archive lookup for known mapped FPs.	10 years ago
beorn7	ed810b45bf	Improvements after review.	10 years ago
beorn7	2235cec175	Handle fingerprint collisions.	10 years ago