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From "tom liu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1395) Integrate Katta
Date Sun, 10 Oct 2010 08:39:30 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12919581#action_12919581
] 

tom liu commented on SOLR-1395:
-------------------------------

My deployment is:
# one Master
# two Slaves:
#* solr01
#* solr02
# two Indexes:
#* solrhome01(.zip)
#* solrhome02(.zip)

And, i use:
{noformat}
# bin/katta addIndex solrhome01 hdfs://localhost:9000/solr/solrhome01.zip
# bin/katta addIndex solrhome02 hdfs://localhost:9000/solr/solrhome02.zip
{noformat}

so, my shard-Node is:
# solrhome01#solrhome01
#* --solr01
#* --solr02
# solrhome02#solrhome02
#* --solr01
#* --solr02

When i searched in master, i found that, in any slave, the search ran twice, such as:
{noformat}
SolrServer.request: solr01:20000 shards:[solrhome01#solrhome01, solrhome02#solrhome02] 
request params:fl=id%2Cscore&start=0&q=solr&isShard=true&fsv=true&rows=10&shards=solrhome01%23solrhome01%2Csolrhome02%23solrhome02
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome02#solrhome02] webapp=null path=/select params={fl=id%2Cscore&start=0&q=solr&isShard=true&fsv=true&rows=10}
hits=1 status=0 QTime=16 
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome01#solrhome01] webapp=null path=/select params={fl=id%2Cscore&start=0&q=solr&isShard=true&fsv=true&rows=10}
hits=1 status=0 QTime=16 
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome02#solrhome02] webapp=null path=/select params={fl=id%2Cscore%2Cid&start=0&q=solr&isShard=true&rows=10&ids=SOLR1000}
status=0 QTime=0 
SolrServer.SolrResponse:{response={numFound=1,start=00.5747526,docs=[SolrDocument[{id=SOLR1000,
score=0.5747526}]]},QueriedShards=[Ljava.lang.String;@175ace6}
{noformat}
{noformat}
SolrServer.request: tom-SL510:20001 shards:[solrhome01#solrhome01, solrhome02#solrhome02]

request params:start=0&ids=SOLR1000&q=solr&isShard=true&rows=10&shards=solrhome01%23solrhome01%2Csolrhome02%23solrhome02
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome02#solrhome02] webapp=null path=/select params={start=0&ids=SOLR1000&q=solr&isShard=true&rows=10&fsv=true&fl=id%2Cscore}
status=0 QTime=16
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome01#solrhome01] webapp=null path=/select params={start=0&ids=SOLR1000&q=solr&isShard=true&rows=10&fsv=true&fl=id%2Cscore}
status=0 QTime=16
2010-10-10 16:17:04 org.apache.solr.core.SolrCore execute
信息: [solrhome01#solrhome01] webapp=null path=/select params={start=0&ids=SOLR1000&ids=SOLR1000&q=solr&isShard=true&rows=10}
status=0 QTime=0
SolrServer.SolrResponse:{response={numFound=1,start=0,docs=[SolrDocument[{id=SOLR1000, ...]]},QueriedShards=[Ljava.lang.String;@1d590d}
{noformat}

i think, in slaves, IS_SHARD=true, so, it would prevent this happens.

> 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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