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https://issues.apache.org/jira/browse/HADOOP-18989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shuyan Zhang resolved HADOOP-18989.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
> Use thread pool to improve the speed of creating control files in TestDFSIO
> ---------------------------------------------------------------------------
>
> Key: HADOOP-18989
> URL: https://issues.apache.org/jira/browse/HADOOP-18989
> Project: Hadoop Common
> Issue Type: Improvement
> Components: benchmarks, common
> Affects Versions: 3.3.6
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> When we use TestDFSIO tool to test the throughouts of HDFS clusters, we found
> it is so slow in the creating controll files stage.
> After refering to the source code, we found that method createControlFile try
> to create control files serially. It can be improved by using thread pool.
> After optimizing, the TestDFSIO tool runs quicker than before.
>
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