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https://issues.apache.org/jira/browse/HDFS-16881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz-wo Sze resolved HDFS-16881.
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Fix Version/s: 1.3.0
Hadoop Flags: Reviewed
Resolution: Fixed
The pull request is now merged.
> Warn if AccessControlEnforcer runs for a long time to check permission
> ----------------------------------------------------------------------
>
> Key: HDFS-16881
> URL: https://issues.apache.org/jira/browse/HDFS-16881
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namanode
> Reporter: Tsz-wo Sze
> Assignee: Tsz-wo Sze
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.3.0
>
>
> AccessControlEnforcer is configurable. If an external AccessControlEnforcer
> runs for a long time to check permission with the FSnamesystem lock, it will
> significantly slow down the entire Namenode. In the JIRA, we will print a
> WARN message when it happens.
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