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https://issues.apache.org/jira/browse/SOLR-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12785014#action_12785014
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Jason Rutherglen commented on SOLR-1277:
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bq. The question then becomes what do you want to make automatic
vs those things that require operator intervention.
Right, I'd like the distributed Solr + ZK system to
automatically failover to another server if there's a functional
software failure. Also, with a search system query times are
very important and if they suddenly drop off on a replicated
server, the node needs to be removed and a new server brought
online (hopefully automatically). If Solr + ZK doesn't take out
a server whose query times are 10 times the average of the other
comparable replicated slave servers, then it 's harder to
justify going live with it, in my humble opinion because it's
not really solving the main reason to use a naming service.
While this may not be functionality we need in an initial
release, it's important to insure our initial design does not
limit future functionality.
> Implement a Solr specific naming service (using Zookeeper)
> ----------------------------------------------------------
>
> Key: SOLR-1277
> URL: https://issues.apache.org/jira/browse/SOLR-1277
> Project: Solr
> Issue Type: New Feature
> Affects Versions: 1.4
> Reporter: Jason Rutherglen
> Assignee: Grant Ingersoll
> Priority: Minor
> Fix For: 1.5
>
> Attachments: log4j-1.2.15.jar, SOLR-1277.patch, SOLR-1277.patch,
> SOLR-1277.patch, zookeeper-3.2.1.jar
>
> Original Estimate: 672h
> Remaining Estimate: 672h
>
> The goal is to give Solr server clusters self-healing attributes
> where if a server fails, indexing and searching don't stop and
> all of the partitions remain searchable. For configuration, the
> ability to centrally deploy a new configuration without servers
> going offline.
> We can start with basic failover and start from there?
> Features:
> * Automatic failover (i.e. when a server fails, clients stop
> trying to index to or search it)
> * Centralized configuration management (i.e. new solrconfig.xml
> or schema.xml propagates to a live Solr cluster)
> * Optionally allow shards of a partition to be moved to another
> server (i.e. if a server gets hot, move the hot segments out to
> cooler servers). Ideally we'd have a way to detect hot segments
> and move them seamlessly. With NRT this becomes somewhat more
> difficult but not impossible?
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