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https://issues.apache.org/jira/browse/HADOOP-3681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lohit Vijayarenu updated HADOOP-3681:
-------------------------------------
Attachment: HADOOP-3681-3-18.patch
Yes, there could be an exception thrown before locateFollowingBlock. So, we
have to check lastException before setting close to true by calling isClosed().
As you said after flush is the right place. This updated patch also changes one
testcase which used to dump the exception on stdout.
> Infinite loop in dfs close
> --------------------------
>
> Key: HADOOP-3681
> URL: https://issues.apache.org/jira/browse/HADOOP-3681
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.17.0
> Reporter: Koji Noguchi
> Assignee: Lohit Vijayarenu
> Fix For: 0.17.1, 0.18.0
>
> Attachments: H-3681-jstack.txt, HADOOP-3681-1.patch,
> HADOOP-3681-2.patch, HADOOP-3681-3-18.patch
>
>
> We had dfsClient -put hang outputting
> {noformat}
> 2008-06-28 10:05:12,595 WARN org.apache.hadoop.dfs.DFSClient: DataStreamer
> Exception: java.net.SocketTimeoutException:
> timed out waiting for rpc response
> 2008-06-28 10:05:12,595 WARN org.apache.hadoop.dfs.DFSClient: Error Recovery
> for block null bad datanode[0]
> 2008-06-28 10:05:51,067 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> 2008-06-28 10:05:52,898 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> 2008-06-28 10:05:54,893 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> 2008-06-28 10:05:56,920 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> 2008-06-28 10:05:57,765 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> 2008-06-28 10:05:58,199 INFO org.apache.hadoop.dfs.DFSClient: Could not
> complete file
> /_temporary/_task_200806262325_4136_r_000408_0/part-00408
> retrying...
> [repeats forever]
> {noformat}
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