[
https://issues.apache.org/jira/browse/SOLR-3755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440698#comment-13440698
]
Yonik Seeley commented on SOLR-3755:
------------------------------------
We need to associate hash ranges with shards and allow overlapping shards (i.e.
1-10, 1-5,6-10)
General Strategy for splitting w/ no service interruptions:
- Bring up 2 new cores on the same node, covering the new hash ranges
- Both cores should go into recovery mode (i.e. leader should start
forwarding updates)
- leader does a hard commit and splits the index
- Smaller indexes are installed on the new cores
- Overseer should create new replicas for new shards
- Mark old shard as “retired” – some mechanism to shut it down (after there is
an acceptable amount of coverage of the new shards via replicas)
Future: allow splitting even with “custom” shards
> shard splitting
> ---------------
>
> Key: SOLR-3755
> URL: https://issues.apache.org/jira/browse/SOLR-3755
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Reporter: Yonik Seeley
>
> We can currently easily add replicas to handle increases in query volume, but
> we should also add a way to add additional shards dynamically by splitting
> existing shards.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
