Re: [VOTE] Release Apache Druid 0.21.1 [RC1]

2021-05-18 Thread Clint Wylie
Hmm, I'm actually still seeing a permissions related issue with the rc1 Docker image and Linux (Docker on Mac OS seems to work ok, which is where I initially tested). middlemanager| 2021-05-18T21:20:39,239 INFO [forking-task-runner-0] org.apache.druid.indexing.overlord.ForkingTaskRunner - Exce

Re: Push-down of operations for SystemSchema tables

2021-05-18 Thread Jason Koch
Thanks Chen for your notes on task view. Ultimately the things you mention (limit & filters) are what I am trying to get pushed down into the SegmentsTable. I think the changes you mention (LIMIT & filters) will help to reduce the serialization costs, and will benefit when put together with the fo

Re: Push-down of operations for SystemSchema tables

2021-05-18 Thread Chen Frank
Hi Jason I have tracked this problem for quite a while. Since you are interested in it, I would like to share something I know with you so that you could take these in consideration. In 0.19.0, there was a PR #9883 improving the performance of segments query by eliminating the JSON serializati