[ http://issues.apache.org/jira/browse/HADOOP-526?page=all ]
Milind Bhandarkar updated HADOOP-526:
-------------------------------------
Attachment: hadoop-526.patch
This patch fixes the issue.
> datanode lock message causes NullPointerException
> -------------------------------------------------
>
> Key: HADOOP-526
> URL: http://issues.apache.org/jira/browse/HADOOP-526
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.6.0
> Reporter: Owen O'Malley
> Assigned To: Milind Bhandarkar
> Fix For: 0.6.1
>
> Attachments: hadoop-526.patch
>
>
> If you try to bring up a second datanode in the same directory, you get a
> NullPointerException.
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.hadoop.dfs.DataStorage.lock(DataStorage.java:132)
> at org.apache.hadoop.dfs.DataStorage.<init>(DataStorage.java:72)
> at org.apache.hadoop.dfs.DataStorage.<init>(DataStorage.java:50)
> at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:194)
> at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:155)
> at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1050)
> at org.apache.hadoop.dfs.DataNode.run(DataNode.java:984)
> at org.apache.hadoop.dfs.DataNode.runAndWait(DataNode.java:1013)
> at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1066)
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