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https://issues.apache.org/jira/browse/HDFS-1081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12858025#action_12858025
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Jitendra Nath Pandey commented on HDFS-1081:
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+1. minor nit, probably a typo, the DatanodeProtocol version is bumped by 2.
> Performance regression in DistributedFileSystem::getFileBlockLocations in
> secure systems
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-1081
> URL: https://issues.apache.org/jira/browse/HDFS-1081
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: security
> Reporter: Jakob Homan
> Assignee: Jakob Homan
> Attachments: HADOOP-1081-Y20-1.patch
>
>
> We've seen a significant decrease in the performance of
> DistributedFileSystem::getFileBlockLocations() with security turned on Y20.
> This JIRA is for correcting and tracking it both on Y20 and trunk.
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