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https://issues.apache.org/jira/browse/SOLR-3585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027908#comment-14027908
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Ted Sullivan edited comment on SOLR-3585 at 6/11/14 3:48 PM:
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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 UpdateRequestProcessor, it is of general use.


was (Author: tedsullivan):
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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