[HBASE-9709] LogReplay throws NPE when no KVs to be replayed in a WALEdit

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.96.0
• Fix Version/s: 0.98.0, 0.96.0
• Hadoop Flags: Reviewed
• Assignee: Jeffrey Zhong
• Reporter: Jeffrey Zhong
• Created: 03/Oct/13 23:56
• Updated: 20/Nov/15 11:55
• Resolved: 04/Oct/13 19:01

Description

This is regression from my recent checkin from hbase-9390 below is the exception stack:

2013-10-03 09:34:32,735 ERROR [WriterThread-1] wal.HLogSplitter: Exiting thread
java.lang.NullPointerException
        at org.apache.hadoop.hbase.regionserver.wal.HLogSplitter$LogReplayOutputSink.groupEditsByServer(HLogSplitter.java:1489)
        at org.apache.hadoop.hbase.regionserver.wal.HLogSplitter$LogReplayOutputSink.append(HLogSplitter.java:1368)
        at org.apache.hadoop.hbase.regionserver.wal.HLogSplitter$WriterThread.writeBuffer(HLogSplitter.java:847)
        at org.apache.hadoop.hbase.regionserver.wal.HLogSplitter$WriterThread.doRun(HLogSplitter.java:839)
        at org.apache.hadoop.hbase.regionserver.wal.HLogSplitter$WriterThread.run(HLogSplitter.java:809)