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https://issues.apache.org/jira/browse/HDFS-15766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shilun Fan updated HDFS-15766:
------------------------------
Component/s: rbf
Target Version/s: 3.4.0
Affects Version/s: 3.4.0
> RBF: MockResolver.getMountPoints() breaks the semantic of
> FileSubclusterResolver.
> ---------------------------------------------------------------------------------
>
> Key: HDFS-15766
> URL: https://issues.apache.org/jira/browse/HDFS-15766
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Affects Versions: 3.4.0
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Fix For: 3.4.0
>
> Attachments: HDFS-15766.001.patch, HDFS-15766.002.patch,
> HDFS-15766.003.patch
>
>
> MockResolver.getMountPoints() breaks the semantic of
> FileSubclusterResolver.getMountPoints(). Currently it returns null when the
> path is a mount point and no mount points are under the path.
> {quote}Return zero-length list if the path is a mount point but there are no
> mount points under the path.
> {quote}
>
> This is required by router federation rename. I found this bug when writing
> unit test for the rbf rename. Let's fix it here to avoid mixing up with the
> router federation rename.
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