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https://issues.apache.org/jira/browse/SOLR-6760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Blum updated SOLR-6760:
-----------------------------
    Attachment:     (was: SOLR-6760.patch)

> New optimized DistributedQueue implementation for overseer
> ----------------------------------------------------------
>
>                 Key: SOLR-6760
>                 URL: https://issues.apache.org/jira/browse/SOLR-6760
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>         Attachments: SOLR-6760.patch
>
>
> Currently the DQ works as follows
> * read all items in the directory
> * sort them all 
> * take the head and return it and discard everything else
> * rinse and repeat
> This works well when we have only a handful of items in the Queue. If the 
> items in the queue is much larger (in tens of thousands) , this is 
> counterproductive
> As the overseer queue is a multiple producers + single consumer queue, We can 
> read them all in bulk  and before processing each item , just do a 
> zk.exists(itemname) and if all is well we don't need to do the fetch all + 
> sort thing again



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