[HDFS-6996] SnapshotDiff report can hit IndexOutOfBoundsException when there are nested renamed directory/file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.6.0
• Component/s: snapshots
• Target Version/s: 2.6.0
• Hadoop Flags: Reviewed
• Assignee: Jing Zhao
• Reporter: Jing Zhao
• Created: 04/Sep/14 20:11
• Updated: 01/Dec/14 03:10
• Resolved: 04/Sep/14 23:43

Description

Currently when computing snapshot diff report where a renamed file/directory is involved, we scan the withNameList inside of the corresponding WithCount node to identify the correct rename target. However, the withNameList can be empty due to snapshot deletion operations thus an IndexOutOfBoundsException can be triggered.