v0.15.0

v0.15.0 - Feb 6, 2017

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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