mirror of
https://github.com/apache/druid.git
synced 2025-02-11 20:45:01 +00:00
This change is to emit following metrics as part of GroupByStatsMonitor monitor, mergeBuffer/used -> Number of merge buffers used. mergeBuffer/acquisitionTimeNs -> Total time required to acquire merge buffer. mergeBuffer/acquisition -> Number of queries that acquired a batch of merge buffers. groupBy/spilledQueries -> Number of queries that spilled onto the disk. groupBy/spilledBytes-> Spilled bytes on the disk. groupBy/mergeDictionarySize -> Size of the merging dictionary.
This module provides Druid aggregators based on https://datasketches.apache.org/.
Credits: This module is a result of feedback and work done by following people.
https://github.com/cheddar https://github.com/himanshug https://github.com/leerho https://github.com/will-lauer