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From Doğacan Güney (JIRA) <j...@apache.org>
Subject [jira] Commented: (NUTCH-692) AlreadyBeingCreatedException with Hadoop 0.19
Date Sun, 07 Jun 2009 17:24:07 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717058#action_12717058
] 

Doğacan Güney commented on NUTCH-692:
-------------------------------------

Sorry for the late answer.

Since Julien confirmed that it fixes the problem, I will commit this patch if there are no
objections.

> 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
>         Attachments: NUTCH-692.patch
>
>
> 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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