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From "Avlesh Singh (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1352) DIH: MultiThreaded
Date Sun, 09 Aug 2009 07:58:15 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741047#action_12741047
] 

Avlesh Singh commented on SOLR-1352:
------------------------------------

Thanks, once again :), for creating the ticket, Noble.
Here's the last discussion on the topic, "Support for batch processing of commands using parallel
threads in DIH" - http://www.lucidimagination.com/search/document/a9b26ade46466ee/queries_regarding_a_paralleldataimporthandler

> 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
>
>
> 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" numThreads="4">
> <!--more stuff goes here-->
> </entity>
> {code}
> at the entity where the numThreads is specified it should fork into multiple threads.
If the numThreads<2 it executes w/o forking. In debug mode it automatically becomes singlethreaded.

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