[
https://issues.apache.org/jira/browse/HIVE-3706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13496433#comment-13496433
]
Kevin Wilfong commented on HIVE-3706:
-------------------------------------
https://reviews.facebook.net/D6693
> getBoolVar in FileSinkOperator can be optimized
> -----------------------------------------------
>
> Key: HIVE-3706
> URL: https://issues.apache.org/jira/browse/HIVE-3706
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Affects Versions: 0.10.0
> Reporter: Kevin Wilfong
> Assignee: Kevin Wilfong
> Attachments: HIVE-3706.1.patch.txt
>
>
> There's a call to HiveConf.getBoolVar in FileSinkOperator's processOp method.
> In benchmarks we found this call to be using ~2% of the CPU time on simple
> queries, e.g. INSERT OVERWRITE TABLE t1 SELECT * FROM t2;
> This boolean value, a flag to collect the RawDataSize stat, won't change
> during the processing of a query, so we can determine it at initialization
> and store that value, saving that CPU.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
