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v0.16.1 - May 26, 2017

Misc/Bugs
  • replace heap-based intersect with pairwise (minor performance improvement)
  • respect text_index_service config value everywhere (minor bug fix)
  • stop timing /admin/* endpoints (more accurate requests_in_*_to_* Graphite metric reporting)

v0.16.0 - March 2, 2017

Features
  • Support for protobuf3
Misc/Bugs
  • siphash -> sip13 for hashing tags/metrics (minor performance improvement)
  • fix missing pprof HTTP routes (/debug/pprof/{heap|profile|block|trace})
  • stop materializing and release memory back to the OS once graceful restart is triggered: this creates space for the new instance to load up

v0.15.0 - Feb 6, 2017

Features
  • Support for quoting pieces of text-match queries using < and >. This allows selecting pieces of metric that span dots, like so: text-match:<df.root.bytes_free>. This requires a carbonapi equal to or newer than 79f91477a.
  • Graceful restart using a facebookgo/grace. Send SIGUSR2 to spawn a new carbonsearch. The old process will hand over to the new one once the new one has warmed up.
  • Warmup period: carbonsearch will wait until it has ingested enough data to serve search queries. This is managed by the warm_threshold config setting on a per-consumer basis. This may be bypassed by passing -coldStart on the command line.
Config
  • warm_threshold: a ratio (valid range: 0 to 1) that describes how much progress a consumer should make before considering itself warm. For the Kafka consumer this represents position in the buffer relative to first offset seen; the HTTP consumer must be informed of progress using a POST to /consumer/progress.
Misc/Bugs
  • index materialization timings are now only logged under debug builds

v0.14.0 - Dec 5, 2016

This is the first tagged release, so changes are from previously deployed version (28fbc853).

Features
  • autocomplete for queries that have a trailing glob. When deployed alongside carbonzipper 64a4933, carbonsearch queries can be auto-completed from the graphite-web UI.
Config
  • change default search prefix to 'virt.v1.*.' for better graphite-web support (49b6a91 for details)
  • support prefix in config file (rather than a CLI flag)
  • split indexes mapping now associates multiple services with a single index (link)
Reporting
  • new graphite metrics for index generation timings and index sizes
  • request logging for all requests, query time + result counts for Find requests
Misc/Bugs
  • various small tweaks to make carbonsearch clean against go-staticcheck, other cleanups based on various other linters/static checkers
  • include BuildVersion in ExpVars