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https://issues.apache.org/jira/browse/HADOOP-18373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-18373.
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Fix Version/s: 3.3.9
Resolution: Fixed
> IOStatisticsContext tuning
> --------------------------
>
> Key: HADOOP-18373
> URL: https://issues.apache.org/jira/browse/HADOOP-18373
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3, test
> Affects Versions: 3.3.9
> Reporter: Steve Loughran
> Assignee: Viraj Jasani
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.3.9
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Tuning of the IOStatisticsContext code
> h2. change property name to fs.iostatistics....
> there are other fs.iostatistics options, the new one needs consistent naming
> h2. enable in hadoop-aws
> edit core-site.xml in hadoop-aws/test/resources to always collect context
> iOStatistics
> This helps qualify the code
> {code}
> <property>
> <name>fs.thread.level.iostatistics.enabled</name>
> <value>true</value>
> </property>
> {code}
> h3. IOStatisticsContext to add add static probe to see if it is enabled.
> lets apps know not to bother collecting/reporting
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