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https://issues.apache.org/jira/browse/HADOOP-17020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved HADOOP-17020.
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Fix Version/s: 3.3.1
Resolution: Fixed
thanks, committed to branch 3.3 -you both get credit
> Improve RawFileSystem Performance
> ---------------------------------
>
> Key: HADOOP-17020
> URL: https://issues.apache.org/jira/browse/HADOOP-17020
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Reporter: Rajesh Balamohan
> Assignee: Mehakmeet Singh
> Priority: Minor
> Fix For: 3.3.1
>
> Attachments: HADOOP-17020.1.patch, Screenshot 2020-04-29 at 5.24.53
> PM.png, Screenshot 2020-05-01 at 7.12.06 AM.png
>
>
> Improving RawFileSystem performance.
> Changes:
> * RawLocalFileSystem could localize the default block size to avoid sync
> bottleneck with a Configuration object.
> [https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/RawLocalFileSystem.java#L666]
> * Exists() override method for optimization.
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