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Posted to dev@lucene.apache.org by "Scott Blum (JIRA)" <ji...@apache.org> on 2015/08/14 20:58:45 UTC
[jira] [Comment Edited] (SOLR-6629) Watch /collections zk node on
all nodes
[ https://issues.apache.org/jira/browse/SOLR-6629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697552#comment-14697552 ]
Scott Blum edited comment on SOLR-6629 at 8/14/15 6:58 PM:
-----------------------------------------------------------
Second pass, I think this is actually in a good state (ALL TESTS PASSING). We do need to chat through the new handling of lazyCollections some more, but I thought I would present to you a working version in code of what I was talking about.
We should also consider optimizing lazyCollectionState to do temporary caching (cache for 2 seconds?) to avoid hitting ZK rapidly in succession.
was (Author: dragonsinth):
Second pass, I think this is actually in a good state. We do need to chat through the new handling of lazyCollections some more, but I thought I would present to you a working version in code of what I was talking about.
We should also consider optimizing lazyCollectionState to do temporary caching (cache for 2 seconds?) to avoid hitting ZK rapidly in succession.
> Watch /collections zk node on all nodes
> ---------------------------------------
>
> Key: SOLR-6629
> URL: https://issues.apache.org/jira/browse/SOLR-6629
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Noble Paul
> Fix For: Trunk
>
> Attachments: SOLR-6629.patch
>
>
> The main clusterstate.json is refreshed/used as a poor substitute for informing all nodes about new or deleted collections even when the collection being created or deleted has state format > 1. When we move away from state format 1 then we should do away with this workaround and start watching the /collections zk node on all nodes.
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