Siyao Meng created HDFS-15513:
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Summary: Allow client to query snapshot status on one directory
Key: HDFS-15513
URL: https://issues.apache.org/jira/browse/HDFS-15513
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs, hdfs-client
Affects Versions: 3.3.0
Reporter: Siyao Meng
Alternatively, we can allow the client to query snapshot status on *a list of*
directories, if necessary. Thoughts?
Rationale:
At the moment, we could only retrieve the full list of snapshottable
directories with
[{{getSnapshottableDirListing()}}|https://github.com/apache/hadoop/blob/233619a0a462ae2eb7e7253b6bb8ae48eaa5eb19/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java#L6986-L6994].
This leads to the inefficiency In HDFS-15492 that we have to get the *entire*
list of snapshottable directory to check if a file being deleted is inside a
snapshottable directory.
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