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https://issues.apache.org/jira/browse/HDFS-13212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16382357#comment-16382357
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Íñigo Goiri commented on HDFS-13212:
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[~wuweiwei], thanks for catching this, we had a similar issue in HDFS-12988.
As [~linyiqun] mentioned, you should add a unit test for
[^HDFS-13212-001.patch].
You can use the one added in HDFS-12988 as a reference or probably modify it to
cover this case.
> RBF: Fix router location cache issue
> ------------------------------------
>
> Key: HDFS-13212
> URL: https://issues.apache.org/jira/browse/HDFS-13212
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: federation, hdfs
> Reporter: Weiwei Wu
> Priority: Major
> Attachments: HDFS-13212-001.patch
>
>
> The MountTableResolver refreshEntries function have a bug when add a new
> mount table entry which already have location cache. The old location cache
> will never be invalid until this mount point change again.
> Need to invalid the location cache when add the mount table entries.
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