You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-dev@hadoop.apache.org by "Runping Qi (JIRA)" <ji...@apache.org> on 2007/04/10 06:43:32 UTC
[jira] Commented: (HADOOP-1154) streaming hang.
(PipeMapRed$MROutputThread gone)
[ https://issues.apache.org/jira/browse/HADOOP-1154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487682 ]
Runping Qi commented on HADOOP-1154:
------------------------------------
+1
It is reasonable to fail a streaming task if its the threads readingfrom/writing to the streaming process fails.
> streaming hang. (PipeMapRed$MROutputThread gone)
> ------------------------------------------------
>
> Key: HADOOP-1154
> URL: https://issues.apache.org/jira/browse/HADOOP-1154
> Project: Hadoop
> Issue Type: Bug
> Components: contrib/streaming
> Reporter: Koji Noguchi
> Assigned To: Koji Noguchi
> Attachments: 1154.patch, PipeReducer.jstack
>
>
> One streaming reducer ('cat') hang,
> '/bin/cat' reducer waiting in
> 0 S _____ 24587 24557 0 75 0 - 631 pipe_w Mar22 ? 00:00:02 /bin/cat
> strace showed that it's waiting in write.
> $ strace -p 24587
> Process 24587 attached - interrupt to quit
> write(1, "________ "..., 138 <unfinished ...>
> Process 24587 detached
> When I looked at the jstack of ReduceTask process, I couldn't find the PipeMapRed$MROutputThread.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.