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From "Mathias Walter (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1395) Integrate Katta
Date Mon, 06 Sep 2010 08:35:40 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12906456#action_12906456
] 

Mathias Walter commented on SOLR-1395:
--------------------------------------

{quote}
I also come into this problem, have you deal with it?
{quote}

Yeah, I got it working by using the Katta Distribution Policy instead of the MultiShard Distributed
Search of Solr. That does not solve the RPC problem, but avoid it completely. Personally,
I think it is better to keep Katta choosing how to distribute the queries to the different
Katta nodes instead of letting Solr to do this.

I'll provide my changes soon.

{quote}
And btw, how you get these beautiful logs?
{quote}

I got the logs by configuring the log4j.properties like follows:

{noformat}
katta.root.logger=TRACE,console
log4j.logger.org.apache.zookeeper=WARN
#log4j.logger.org.apache.hadoop=WARN
log4j.logger.org.I0Itec.zkclient=WARN
log4j.logger.org.mortbay.log=WARN
katta.log.dir=./logs
katta.log.file=katta.log

# Define the root logger to the system property "katta.root.logger".
log4j.rootLogger=${katta.root.logger}

#
# console
# Add "console" to rootlogger above if you want to use this 
#
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%5p %d{ISO8601} [%t] %c - %m%n
{noformat}

> Integrate Katta
> ---------------
>
>                 Key: SOLR-1395
>                 URL: https://issues.apache.org/jira/browse/SOLR-1395
>             Project: Solr
>          Issue Type: New Feature
>    Affects Versions: 1.4
>            Reporter: Jason Rutherglen
>            Priority: Minor
>             Fix For: Next
>
>         Attachments: back-end.log, front-end.log, hadoop-core-0.19.0.jar, katta-core-0.6-dev.jar,
katta.node.properties, katta.zk.properties, log4j-1.2.13.jar, solr-1395-1431-3.patch, solr-1395-1431-4.patch,
solr-1395-1431-katta0.6.patch, solr-1395-1431-katta0.6.patch, solr-1395-1431.patch, SOLR-1395.patch,
SOLR-1395.patch, SOLR-1395.patch, test-katta-core-0.6-dev.jar, zkclient-0.1-dev.jar, zookeeper-3.2.1.jar
>
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> We'll integrate Katta into Solr so that:
> * Distributed search uses Hadoop RPC
> * Shard/SolrCore distribution and management
> * Zookeeper based failover
> * Indexes may be built using Hadoop

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