[jira] [Commented] (SOLR-3585) processing updates in multiple threads

["Ted Sullivan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-3585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027908#comment-14027908 ] 

Ted Sullivan commented on SOLR-3585:
------------------------------------

Curious as to why this issue has not been picked up/scheduled for a release. I am working with a client that is using DataImportHandler to connect to Oracle and because of performance issues with the latter (vis Clobs) needs every speed improvement that they can get. They have 5 parallel DIH handlers and that helps. They recently installed this patch and report that they get a better than 2X improvement (~50 minutes for a load compared to ~20 minutes with the patch). Is there a reason why this submission has stalled? Given the removal of multithreading in DIH, this seems to be a very good replacement option, and since it is a UpdateRequestHandler, it is of general use.

> processing updates in multiple threads
> --------------------------------------
>
>                 Key: SOLR-3585
>                 URL: https://issues.apache.org/jira/browse/SOLR-3585
>             Project: Solr
>          Issue Type: Improvement
>          Components: update
>    Affects Versions: 4.0-ALPHA, 5.0
>            Reporter: Mikhail Khludnev
>         Attachments: SOLR-3585.patch, SOLR-3585.patch, multithreadupd.patch, report.tar.gz
>
>
> Hello,
> I'd like to contribute update processor which forks many threads which concurrently process the stream of commands. It may be beneficial for users who streams many docs through single request. 



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