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https://issues.apache.org/jira/browse/KYLIN-2409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15956218#comment-15956218
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Shaofeng SHI commented on KYLIN-2409:
-------------------------------------
By analysis the profiling report from JMC, only two findings:
1) TrieDictionaryForest repeatedly calculate something, this has been fixed by
xiefan.
2) The mapper works in a multiple thread way, which over-subscribe CPU and
impacts other mappers; by changing to single thread, the overall performance
get a small enhance.
> Performance tunning for in-mem cubing
> -------------------------------------
>
> Key: KYLIN-2409
> URL: https://issues.apache.org/jira/browse/KYLIN-2409
> Project: Kylin
> Issue Type: Improvement
> Components: Job Engine
> Reporter: Shaofeng SHI
> Assignee: Shaofeng SHI
> Fix For: v2.0.0
>
>
> Some time we observed the in-mem cubing is slow. It deserves a profiling to
> see whether there are bottlenecks.
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