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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1277) Implement a Solr specific naming service (using Zookeeper)
Date Thu, 03 Dec 2009 16:17:22 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12785381#action_12785381
] 

Mark Miller commented on SOLR-1277:
-----------------------------------

bq. less required configuration please.

You wouldn't have to configure anything. Ideally, the example would come with it simply configured
for one core with everything how it works now (same urls, etc). Optionally, we could allow
someone to not use it, and just assume that simple configuration. The example would want it
though, so we can put in commented out example config (eg for zookeeper setup). Then if you
didnt have it, we would essentially read a dummy simple cfg (though I don't think thats really
necessary myself), and we can have singlecore/multicore more in line with each other.

There is no getting around the config we are looking for - zookeeper will need it one way
or another, and not in solrconfig.

> 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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