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https://issues.apache.org/jira/browse/SOLR-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13454757#comment-13454757
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Dan Rosher commented on SOLR-2592:
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Hi,
We also have a use case where we need to divvy the index into specific slices
such that a document ends up on a specific slice, in a way that all docs on
that slice are related, in effect a filter of the collection of docs.
Unfortunately this patch didn't meet our needs, so I've written one
(SOLR_2592_solr_4_0_0_BETA_ShardPartitioner )that allows a user to create a
ShardPartitioner to be more flexible about which shard a document might live.
ShardPartitioner is pluggable and added via solrconfig.xml.
The default is a HashShardPartitioner that works much like the existing
implementation, and as an example I've also added a NamedShardPartitioner. This
might be used to partition by date for example, or any other field value.
It's against 4.0 Beta since that's what we're using, and meant changing some of
the core testing src to test NamedShardPartitioner.
Perhaps someone might be able to take a look and comment?
Cheers,
Dan
> Pluggable shard lookup mechanism for SolrCloud
> ----------------------------------------------
>
> 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: Mark Miller
> Attachments: dbq_fix.patch, pluggable_sharding.patch,
> pluggable_sharding_V2.patch, SOLR-2592.patch, SOLR-2592_r1373086.patch,
> SOLR-2592_rev_2.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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