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https://issues.apache.org/jira/browse/SOLR-5477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anshum Gupta updated SOLR-5477:
-------------------------------

    Attachment: SOLR-5477.patch

Thanks for looking at it Mark.
Here's a patch that addresses most of the stuff.

bq. rsp.setHttpCaching(false); 
I'd moved it but it makes sense to move it back (done).

About 2 clients racing to create the same id, I don't think that would happen 
(if you're talking about the OCP creating conflicting id) as it's currently 
single threaded and at a given time only one task would get processed.
I'll however look at it again to see if I'm missing something.

> Async execution of OverseerCollectionProcessor tasks
> ----------------------------------------------------
>
>                 Key: SOLR-5477
>                 URL: https://issues.apache.org/jira/browse/SOLR-5477
>             Project: Solr
>          Issue Type: Sub-task
>          Components: SolrCloud
>            Reporter: Noble Paul
>            Assignee: Anshum Gupta
>         Attachments: SOLR-5477-CoreAdminStatus.patch, 
> SOLR-5477-updated.patch, SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, 
> SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, 
> SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, 
> SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, 
> SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, SOLR-5477.patch, 
> SOLR-5477.patch, SOLR-5477.patch
>
>
> Typical collection admin commands are long running and it is very common to 
> have the requests get timed out.  It is more of a problem if the cluster is 
> very large.Add an option to run these commands asynchronously
> add an extra param async=true for all collection commands
> the task is written to ZK and the caller is returned a task id. 
> as separate collection admin command will be added to poll the status of the 
> task
> command=status&id=7657668909
> if id is not passed all running async tasks should be listed
> A separate queue is created to store in-process tasks . After the tasks are 
> completed the queue entry is removed. OverSeerColectionProcessor will perform 
> these tasks in multiple threads



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