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Posted to dev@lucene.apache.org by "Shawn Heisey (JIRA)" <ji...@apache.org> on 2015/07/27 17:49:05 UTC
[jira] [Commented] (SOLR-7191) Improve stability and startup
performance of SolrCloud with thousands of collections
[ https://issues.apache.org/jira/browse/SOLR-7191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642896#comment-14642896 ]
Shawn Heisey commented on SOLR-7191:
------------------------------------
Another user on the mailing list brought up another scaling problem -- large numbers of collections using a large configuration. A 6MB config across 1000 collections requires several gigabytes of RAM.
> Improve stability and startup performance of SolrCloud with thousands of collections
> ------------------------------------------------------------------------------------
>
> Key: SOLR-7191
> URL: https://issues.apache.org/jira/browse/SOLR-7191
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 5.0
> Reporter: Shawn Heisey
> Assignee: Shalin Shekhar Mangar
> Labels: performance, scalability
> Attachments: SOLR-7191.patch, SOLR-7191.patch, SOLR-7191.patch, lots-of-zkstatereader-updates-branch_5x.log
>
>
> A user on the mailing list with thousands of collections (5000 on 4.10.3, 4000 on 5.0) is having severe problems with getting Solr to restart.
> I tried as hard as I could to duplicate the user setup, but I ran into many problems myself even before I was able to get 4000 collections created on a 5.0 example cloud setup. Restarting Solr takes a very long time, and it is not very stable once it's up and running.
> This kind of setup is very much pushing the envelope on SolrCloud performance and scalability. It doesn't help that I'm running both Solr nodes on one machine (I started with 'bin/solr -e cloud') and that ZK is embedded.
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