Jinglun created HDFS-15766:
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Summary: 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
Reporter: Jinglun
MockResolver.getMountPoints() breaks the semantic of
FileSubclusterResolver.getMountPoints().
{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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