[HDFS-5568] Support inclusion of snapshot paths in Namenode fsck

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: snapshots
• Hadoop Flags: Reviewed
• Assignee: Vinayakumar B
• Reporter: Vinayakumar B
• Created: 26/Nov/13 08:50
• Updated: 04/Sep/14 03:34
• Resolved: 27/Nov/13 19:03

Description

Support Fsck to check the snapshot paths also for inconsistency.

Currently Fsck supports snapshot paths if path given explicitly refers to a snapshot path.

We have seen safemode problems in our clusters which were due to blocks missing which were only present inside snapshots. But "hdfs fsck /" shows HEALTHY.

So supporting snapshot paths also during fsck (may be by default or on demand) would be helpful in these cases instead of specifying each and every snapshottable directory.