[HDFS-9555] LazyPersistFileScrubber should still sleep if there are errors in the clear progress

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.8.0, 2.7.3, 3.0.0-alpha1
• Target Version/s: 2.8.0, 2.7.3, 2.6.5
• Hadoop Flags: Reviewed
• Assignee: Phil Yang
• Reporter: Phil Yang
• Created: 14/Dec/15 08:57
• Updated: 06/Jan/17 01:43
• Resolved: 22/Apr/16 16:49

Description

If LazyPersistFileScrubber.clearCorruptLazyPersistFiles throw an exception in run(), there will be no sleep logic so it will restart immediately. However it may be still fail so there are too many ERROR logs in namenode said "Ignoring exception in LazyPersistFileScrubber".

We need sleep if we catch the exception.