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https://issues.apache.org/jira/browse/SOLR-1352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889224#action_12889224
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Alexey Serba commented on SOLR-1352:
------------------------------------
I've tested this feature in trunk on a quite large data set ( freebase WEX
wikipedia extract loaded into Oracle database ). It seems to be working ok.
The only thing I noticed is that multithreaded implementation produce too
verbose logging. Could you please change log level to DEBUG for the following
events:
2010-07-16 20:35:50,199 INFO dataimport.ThreadedEntityProcessorWrapper - arow
: {id=12345, body=blahblah, title=Title}
2010-07-16 20:35:50,201 INFO dataimport.DocBuilder - a row on
docrootSolrInputDocument[{id=id(1.0)={12345}, body=body(1.0)={blahblah},
title=title(1.0)={Title}}]
> DIH: MultiThreaded
> ------------------
>
> Key: SOLR-1352
> URL: https://issues.apache.org/jira/browse/SOLR-1352
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Reporter: Noble Paul
> Assignee: Noble Paul
> Fix For: 1.5
>
> Attachments: SOLR-1352.patch, SOLR-1352.patch, SOLR-1352.patch
>
>
> It has been a long pending request to make DIH multithreaded. Now that we
> have implemented most of the features , the next best thing we can aim for is
> performance. DIH should be able to take advantage of multiple cores in a box
> .I expect the configuration to be as follows
> {code:xml}
> <entity name="foo" threads="4">
> <!--more stuff goes here-->
> </entity>
> {code}
> at the entity where the threads is specified it should fork into multiple
> threads. If the threads<2 it executes w/o forking. In debug mode it
> automatically becomes singlethreaded.
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