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Posted to issues-all@impala.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2019/03/08 21:17:00 UTC
[jira] [Resolved] (IMPALA-8284) KuduTableSink spends a lot of CPU
copying KuduColumnSchemas
[ https://issues.apache.org/jira/browse/IMPALA-8284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved IMPALA-8284.
---------------------------------
Resolution: Fixed
Fix Version/s: Impala 3.2.0
> KuduTableSink spends a lot of CPU copying KuduColumnSchemas
> -----------------------------------------------------------
>
> Key: IMPALA-8284
> URL: https://issues.apache.org/jira/browse/IMPALA-8284
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 3.1.0
> Reporter: Will Berkeley
> Assignee: Todd Lipcon
> Priority: Major
> Labels: kudu, newbie, ramp-up
> Fix For: Impala 3.2.0
>
>
> I noticed Impala spending a significant amount of CPU time in {{KuduTableSink::Send}} creating and destroying KuduColumnSchemas.
> See KUDU-2731 for more information.
> Impala could wait for a better option from the Kudu API, or could cache information about nullability of columns outside the hot loop in Send.
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