[HADOOP-799] NullPointerException in FSDataset

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.9.1, 0.10.1
• Assignee: Sameer Paranjpye
• Reporter: Nigel Daley
• Created: 07/Dec/06 23:41
• Updated: 08/Jul/09 16:42
• Resolved: 12/Feb/07 18:13

Description

Running the smallJobsBenchmark this morning, I got this NPE in one of the datanode logs:

2006-12-07 10:58:09,541 INFO org.apache.hadoop.dfs.DataNode: Deleting block blk_-4859335730964457601
2006-12-07 10:58:21,548 ERROR org.apache.hadoop.dfs.DataNode: Exception: java.lang.NullPointerException
at org.apache.hadoop.dfs.FSDataset.invalidate(FSDataset.java:519)
at org.apache.hadoop.dfs.DataNode.offerService(DataNode.java:386)
at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1007)
at java.lang.Thread.run(Thread.java:595)

Issue Links

• duplicates: HADOOP-973 NPE in FSDataset during heavy Namenode load