[
https://issues.apache.org/jira/browse/SOLR-6760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14705453#comment-14705453
]
Mark Miller commented on SOLR-6760:
-----------------------------------
bq. The rate of processing state operations went up from 4550 requests/min to
26083 requests/min i.e. a boost of 473%!
Nice, huge win!
> New optimized DistributedQueue implementation for overseer
> ----------------------------------------------------------
>
> Key: SOLR-6760
> URL: https://issues.apache.org/jira/browse/SOLR-6760
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Noble Paul
> Assignee: Shalin Shekhar Mangar
> Fix For: Trunk, 5.4
>
> Attachments: SOLR-6760-branch_5x.patch, SOLR-6760.patch,
> SOLR-6760.patch, SOLR-6760.patch, SOLR-6760.patch, deadlock.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
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
