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https://issues.apache.org/jira/browse/HADOOP-3681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12610110#action_12610110
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Koji Noguchi commented on HADOOP-3681:
--------------------------------------
Trying to reproduce.
1) Intentionally fail DataStreamer by throwing IOException right AFTER
{noformat}
2219 lb = locateFollowingBlock(startTime);
{noformat}
2) Add Thread.sleep(1000) at the top of DataStreamer thread run()
so that DataStreamer would fail after flushInternal() line
{noformat}
2524 isClosed();
{noformat}
This will reproduce the hang state.
Also, if datastreamer throws the IOException BEFORE that line, dfs -put would
return '0' but ends up with empty file.
> 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
> Attachments: H-3681-jstack.txt
>
>
> 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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