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