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https://issues.apache.org/jira/browse/HADOOP-3998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676408#action_12676408
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dhruba borthakur commented on HADOOP-3998:
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I think the client cannot detect why the failure occured. It could be that the
primary datanode is really dead, or it coudl be that the block does not exist,.
But the client does not know why it failed, isn't it?
> Got an exception from ClientFinalizer when the JT is terminated
> ---------------------------------------------------------------
>
> Key: HADOOP-3998
> URL: https://issues.apache.org/jira/browse/HADOOP-3998
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.19.0
> Reporter: Amar Kamat
> Assignee: dhruba borthakur
> Fix For: 0.19.2
>
> Attachments: closeAll.patch, closeAll.patch
>
>
> This happens when we terminate the JT using _control-C_. It throws the
> following exception
> {noformat}
> Exception closing file my-file
> java.io.IOException: Filesystem closed
> at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:193)
> at org.apache.hadoop.hdfs.DFSClient.access$700(DFSClient.java:64)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:2868)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:2837)
> at
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker.close(DFSClient.java:808)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:205)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:253)
> at
> org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:1367)
> at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:234)
> at
> org.apache.hadoop.fs.FileSystem$ClientFinalizer.run(FileSystem.java:219)
> {noformat}
> Note that _my-file_ is some file used by the JT.
> Also if there is some file renaming done, then the exception states that the
> earlier file does not exist. I am not sure if this is a MR issue or a DFS
> issue. Opening this issue for investigation.
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