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https://issues.apache.org/jira/browse/HADOOP-2669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573928#action_12573928
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Raghu Angadi commented on HADOOP-2669:
--------------------------------------

+1 for log. In case of error, can we also include if this holder has any leases 
at all? Now we don't know if something happened with this leaseholder or with 
the file.

> DFS client lost lease during writing into DFS files
> ---------------------------------------------------
>
>                 Key: HADOOP-2669
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2669
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Runping Qi
>            Assignee: dhruba borthakur
>         Attachments: NoLease.patch
>
>
> I have a program that reads a block compressed sequence file, does some 
> processing on the records and writes the
> processed records into another  block compressed sequence file.
> During execution of the program, I got the following exception: 
> org.apache.hadoop.ipc.RemoteException: 
> org.apache.hadoop.dfs.LeaseExpiredException: No lease on xxxxx/part-00000
>         at 
> org.apache.hadoop.dfs.FSNamesystem.getAdditionalBlock(FSNamesystem.java:976)
>         at org.apache.hadoop.dfs.NameNode.addBlock(NameNode.java:293)
>         at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596)
>         at org.apache.hadoop.ipc.Client.call(Client.java:482)
>         at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184)
>         at org.apache.hadoop.dfs.$Proxy0.addBlock(Unknown Source)
>         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at 
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
>         at 
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
>         at org.apache.hadoop.dfs.$Proxy0.addBlock(Unknown Source)
>         at 
> org.apache.hadoop.dfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:1554)
>         at 
> org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:1500)
>         at 
> org.apache.hadoop.dfs.DFSClient$DFSOutputStream.endBlock(DFSClient.java:1626)
>         at 
> org.apache.hadoop.dfs.DFSClient$DFSOutputStream.writeChunk(DFSClient.java:1602)
>         at 
> org.apache.hadoop.fs.FSOutputSummer.writeChecksumChunk(FSOutputSummer.java:140)
>         at org.apache.hadoop.fs.FSOutputSummer.write1(FSOutputSummer.java:100)
>         at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:86)
>         at 
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:39)
>         at java.io.DataOutputStream.write(DataOutputStream.java:90)
>         at 
> org.apache.hadoop.io.SequenceFile$BlockCompressWriter.writeBuffer(SequenceFile.java:1181)
>         at 
> org.apache.hadoop.io.SequenceFile$BlockCompressWriter.sync(SequenceFile.java:1198)
>         at 
> org.apache.hadoop.io.SequenceFile$BlockCompressWriter.append(SequenceFile.java:1248)
>         at 
> org.apache.hadoop.mapred.SequenceFileOutputFormat$1.write(SequenceFileOutputFormat.java:69)
>      

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