[
https://issues.apache.org/jira/browse/SOLR-7191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966893#comment-14966893
]
Shawn Heisey commented on SOLR-7191:
------------------------------------
bq. I created 6,000 collections (3 nodes; 2 x replicas) and re-started the 3
nodes, and all green in 24min.
Very nice! That's an improvement, though still fairly slow. How quickly did
the cluster reach full usability -- at least one replica active on all
collections? That's more important than all-green.
I would hope for full stability in a timeframe well under ten minutes, and
under five minutes would be even better. I don't want to discourage your
efforts.
Was this with a single ZK node, or did you have a 3-node ensemble? It's my
understanding that as nodes are added to the ensemble, database updates get
slower, because the write must be coordinated on more hosts. A redundant
ensemble cannot update the database as fast as a single node, so verification
of progress should be done with an ensemble.
> 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,
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
