[HDFS-14009] HttpFS: FileStatus#setSnapShotEnabledFlag throws InvocationTargetException when attribute set is emptySet

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.3
• Fix Version/s: 3.0.4
• Component/s: hdfs, httpfs
• Target Version/s: 3.0.4
• Assignee: Siyao Meng
• Reporter: Siyao Meng
• Created: 18/Oct/18 20:40
• Updated: 02/Oct/19 17:13
• Resolved: 19/Oct/18 00:03

Description

FileStatus#setSnapShotEnabledFlag throws InvocationTargetException when attribute set (attr) is Collections.emptySet().

This happens when a FileStatus object is created with none of the four attributes flags (ACL, Encrypted, EC, Snapshot Enabled) and then FileStatus#setSnapShotEnabledFlag is called.

Rationale for not adding additional tests: The exception is easily reproducible by running existing HttpFS test case TestHttpFSWithHttpFSFileSystem#testOperation[23] (ENCRYPTION). The test passes after the patch is applied.

Note that FileStatus#setSnapShotEnabledFlag is already gone in trunk (by HDFS-12681).

Issue Links

• is caused by: HDFS-13830 Backport HDFS-13141 to branch-3.0: WebHDFS: Add support for getting snasphottable directory list