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From "James Dyer (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3011) DIH MultiThreaded bug
Date Fri, 30 Mar 2012 14:22:26 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242370#comment-13242370
] 

James Dyer commented on SOLR-3011:
----------------------------------

Bernd,

Do you think this is a new bug since SOLR-3011 was applied to the 3.6 branch, or does this
also fail this way for you with 3.5?  Also, is there any way you can provide a failing unit
test?  If so, open a new issue and attach your unit test in a patch.  As you might be aware,
"threads" is removed from 4.0, mostly because of bugs like this one.  I'd be interested in
getting this fixed in the 3.x branch especially if this is newly-caused by SOLR-3011.

You're right that the random test is redundant for the 1-thread case.  No harm in what's there,
but it would be better if the random test did 2-10, not 1-10.
                
> DIH MultiThreaded bug
> ---------------------
>
>                 Key: SOLR-3011
>                 URL: https://issues.apache.org/jira/browse/SOLR-3011
>             Project: Solr
>          Issue Type: Sub-task
>          Components: contrib - DataImportHandler
>    Affects Versions: 3.5
>            Reporter: Mikhail Khludnev
>            Assignee: James Dyer
>            Priority: Minor
>             Fix For: 3.6
>
>         Attachments: SOLR-3011.patch, SOLR-3011.patch, SOLR-3011.patch, SOLR-3011.patch,
SOLR-3011.patch, patch-3011-EntityProcessorBase-iterator.patch, patch-3011-EntityProcessorBase-iterator.patch
>
>
> current DIH design is not thread safe. see last comments at SOLR-2382 and SOLR-2947.
I'm going to provide the patch makes DIH core threadsafe. Mostly it's a SOLR-2947 patch from
28th Dec. 

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