[HDFS-15513] Allow client to query snapshot status on one directory

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.3.0
• Component/s: hdfs, hdfs-client
• Target Version/s: 3.4.0
• Assignee: Unassigned
• Reporter: Siyao Meng
• Created: 05/Aug/20 20:47
• Updated: 04/May/21 11:56

Description

Alternatively, we can allow the client to query snapshot status on a list of given directories by the client. Thoughts?

Rationale:
At the moment, we could only retrieve the full list of snapshottable directories with getSnapshottableDirListing(). 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.

Issue Links

• relates to: HDFS-15492 Make trash root inside each snapshottable directory
• relates to: HDFS-15477 Enforce ordered snapshot deletion