[MAPREDUCE-6261] NullPointerException if MapOutputBuffer.flush invoked twice

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.7.0
• Component/s: mrv2
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Tsuyoshi Ozawa
• Reporter: Jason Darrell Lowe
• Created: 13/Feb/15 20:39
• Updated: 10/Apr/15 20:19
• Resolved: 18/Feb/15 19:29

Description

MapOutputBuffer.flush will throw an NPE if it is invoked twice, since it blindly assumes kvbuffer is not null yet sets kvbuffer to null towards the end of the method.