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From "Noble Paul (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2592) Pluggable shard lookup mechanism for SolrCloud
Date Mon, 17 Sep 2012 02:47:08 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456738#comment-13456738
] 

Noble Paul commented on SOLR-2592:
----------------------------------

Think about an app whose schema and key are already defined and they are moving to cloud,
this will force them to change their keys. Then we have a completely arbitrary way of how
to parse the key depending on how it is encoded. For the clients , it is equally easy or hard
to pass an extra param than constructing a key that contains an extra parameter. Most likely
the key is the only thing that they use in the app (say front end) . I think, it is ugly and
inconvenient to dictate how the key should look like
bq.(or maybe even more than one)
We can enforce that only one field can be used as a "shard.key"

                
> 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_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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