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https://issues.apache.org/jira/browse/SOLR-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13532219#comment-13532219
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Markus Jelsma commented on SOLR-2592:
-------------------------------------
I think this belong to this issue. We're seeing with today's trunk and a clean
Zookeeper the following exception. For some reason, only one node exhibits this
behavior.
{code}
2012-12-14 10:10:27,355 ERROR [apache.zookeeper.ClientCnxn] -
[main-EventThread] - : Error while calling watcher
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Map
at
org.apache.solr.common.cloud.ClusterState.makeSlices(ClusterState.java:246)
at
org.apache.solr.common.cloud.ClusterState.collectionFromObjects(ClusterState.java:231)
at org.apache.solr.common.cloud.ClusterState.load(ClusterState.java:219)
at
org.apache.solr.common.cloud.ZkStateReader$2.process(ZkStateReader.java:207)
at
org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
{code}
> Custom Hashing
> --------------
>
> Key: SOLR-2592
> URL: https://issues.apache.org/jira/browse/SOLR-2592
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Affects Versions: 4.0-ALPHA
> Reporter: Noble Paul
> Assignee: Yonik Seeley
> Fix For: 4.1
>
> Attachments: dbq_fix.patch, pluggable_sharding.patch,
> pluggable_sharding_V2.patch, SOLR-2592_collectionProperties.patch,
> SOLR-2592_collectionProperties.patch, SOLR-2592.patch,
> SOLR-2592_progress.patch, SOLR-2592_query_try1.patch,
> SOLR-2592_r1373086.patch, SOLR-2592_r1384367.patch, SOLR-2592_rev_2.patch,
> SOLR_2592_solr_4_0_0_BETA_ShardPartitioner.patch
>
>
> If the data in a cloud can be partitioned on some criteria (say range, hash,
> attribute value etc) It will be easy to narrow down the search to a smaller
> subset of shards and in effect can achieve more efficient search.
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