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https://issues.apache.org/jira/browse/NUTCH-692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674603#action_12674603
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Sami Siren commented on NUTCH-692:
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Have you seen this outside of EC2? Only in multinode setup?
> AlreadyBeingCreatedException with Hadoop 0.19
> ---------------------------------------------
>
> Key: NUTCH-692
> URL: https://issues.apache.org/jira/browse/NUTCH-692
> Project: Nutch
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: julien nioche
>
> I have been using the SVN version of Nutch on an EC2 cluster and got some
> AlreadyBeingCreatedException during the reduce phase of a parse. For some
> reason one of my tasks crashed and then I ran into this
> AlreadyBeingCreatedException when other nodes tried to pick it up.
> There was recently a discussion on the Hadoop user list on similar issues
> with Hadoop 0.19 (see
> http://markmail.org/search/after+upgrade+to+0%2E19%2E0). I have not tried
> using 0.18.2 yet but will do if the problems persist with 0.19
> I was wondering whether anyone else had experienced the same problem. Do you
> think 0.19 is stable enough to use it for Nutch 1.0?
> I will be running a crawl on a super large cluster in the next couple of
> weeks and I will confirm this issue
> J.
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