[HADOOP-978] AlreadyBeingCreatedException detail message could contain more useful info

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.11.0
• Fix Version/s: 0.13.0
• Assignee: Konstantin Shvachko
• Reporter: Nigel Daley
• Created: 05/Feb/07 21:17
• Updated: 08/Jul/09 16:42
• Resolved: 11/Apr/07 08:48

Description

When I get this exception, it would be REALLY helpful if the detail message could include the hostname of the host that is already creating the file.

org.apache.hadoop.dfs.AlreadyBeingCreatedException: failed to create file /user/foo/bar_02 for DFSClient_task_0001_m_001777_1 on client myhost.com becausependingCreates is non-null.
at org.apache.hadoop.dfs.FSNamesystem.startFile(FSNamesystem.java:661)
at org.apache.hadoop.dfs.NameNode.create(NameNode.java:248)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:337)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:538)