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https://issues.apache.org/jira/browse/SOLR-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791486#action_12791486
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Yonik Seeley commented on SOLR-1277:
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bq. I suppose what I am worried about is when you don't have duplicate shards -
or when two shards with the same data have a long gc pause together - if they
just drop out, you get results back that are not from the full index.
Ahhh, good point. We can't let that happen. But if NodeA said it had ShardX,
and then it's ephemeral node went away, it's not dropping out of the cluster...
it's just that it's currently unavailable (and we need to return partial
results or fail the request).
> 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, 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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