[GitHub] gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12

gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12 URL: https://github.com/apache/incubator-druid/issues/6255#issuecomment-416798257 As I mentioned above, the creation rate of merging dictionary is roughly `2 (forward and reverse dict) x processing.numThreads

[GitHub] gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12

gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12 URL: https://github.com/apache/incubator-druid/issues/6255#issuecomment-416797137 > @gaodayue thank you for catching this. Could you share some more details of your use case? I wonder especially how large the

[GitHub] gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12

gaodayue commented on issue #6255: Heavy GC activities after upgrading to 0.12 URL: https://github.com/apache/incubator-druid/issues/6255#issuecomment-416583814 In order to find out which class puts too much pressure on garbage collector, I captured flight record (60s) before and after