[HDFS-4806] For an INodeDirectoryWithSnapshot, use INode#isInLatestSnapshot() to check if the added/removed child should be recorded in snapshot diff

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Snapshot (HDFS-2802)
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Jing Zhao
• Reporter: Jing Zhao
• Created: 07/May/13 22:49
• Updated: 08/May/13 13:08
• Resolved: 08/May/13 01:19

Description

Before supporting rename with snapshots, when adding/remove a child inode to/from a directory, if the directory is already an INodeDirectoryWithSnapshot, we can directly record the change in the corresponding snapshot diff.

After support rename with snapshots, an INodeDirectoryWithSnapshot may be a renamed node, thus we should use INode#isInLatestSnapshot() to check if we should record the change in snapshots.