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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2018/07/25 02:58:19 UTC
[GitHub] drcrallen commented on issue #5913: Move Caching Cluster Client to
java streams and allow parallel intermediate merges
drcrallen commented on issue #5913: Move Caching Cluster Client to java streams and allow parallel intermediate merges
URL: https://github.com/apache/incubator-druid/pull/5913#issuecomment-407617718
fixed to use chained execution query runners to execute parallel apply fn.
Looks like this now:
<img width="1232" alt="screen shot 2018-07-24 at 7 53 05 pm" src="https://user-images.githubusercontent.com/8213081/43177161-bdc201a2-8f7b-11e8-96ef-5fcfce5d07d1.png">
The overall CPU load is drastically reduced compared to the original version of this PR. The cpu flame graph is a bit lop sided because the overall cpu time this accounts for is actually very small.
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