lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Lance Norskog (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2592) Pluggable shard lookup mechanism for SolrCloud
Date Thu, 07 Jun 2012 03:49:25 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290763#comment-13290763
] 

Lance Norskog commented on SOLR-2592:
-------------------------------------

Hash-based distribution (deterministic pseudo-randomness) is only one way to divvy up documents
among shards. Another common one is date-based: each month is in a different shard. You can
search recent or older without searching all shards.

If you're going to make pluggable distribution policies, why stick to hashing? Why not do
the general case?


                
> 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
>            Reporter: Noble Paul
>         Attachments: dbq_fix.patch, pluggable_sharding.patch, pluggable_sharding_V2.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.  

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message