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https://issues.apache.org/jira/browse/HDFS-16881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17655686#comment-17655686
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ASF GitHub Bot commented on HDFS-16881:
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ayushtkn commented on PR #5268:
URL: https://github.com/apache/hadoop/pull/5268#issuecomment-1374460626
Test failure ``TestHdfsConfigFields`` was related.
[HDFS-16885](https://issues.apache.org/jira/browse/HDFS-16885) is fixing it
> 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: 3.4.0
>
>
> 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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