[HDFS-5249] Fix dumper thread which may die silently

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.1-beta
• Component/s: nfs
• Assignee: Brandon Li
• Reporter: Brandon Li
• Created: 23/Sep/13 22:20
• Updated: 24/Sep/13 23:33
• Resolved: 24/Sep/13 04:27

Description

Dumper thread can get an NPE when the WriteCtx it's about to work on is just deleted by write back thread.

A dead dumper thread could cause out-of-memory error when too many pending writes accumulated for one opened file.