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https://issues.apache.org/jira/browse/SOLR-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13503807#comment-13503807
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Yonik Seeley commented on SOLR-2592:
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Hi Michael, while I was reviewing your patch, I realized that we want something
that clients (like cloud aware SolrJ) can easily get to.
So instead of config in solrconfig.xml that defines a parser for the core, it
seems like this should be a property of the collection?
The HashPartitioner object is currently on the ClusterState object, but it
really seems like this needs to be per-collection (or per config-set?).
Currently, there is a /collections/collection1 node with
{code}
{"configName":"myconf"}
{code}
We could add a "partitioner" or "shardPartitioner" attribute.
And of course there is /clusterstate.json with
{code}
{"collection1":{
"shard1":{
"range":"80000000-ffffffff",
"replicas":{"192.168.1.109:8983_solr_collection1":{
"shard":"shard1",
"roles":null,
"state":"active",
"core":"collection1",
"collection":"collection1",
"node_name":"192.168.1.109:8983_solr",
"base_url":"http://192.168.1.109:8983/solr";,
"leader":"true"}}},
"shard2":{
"range":"0-7fffffff",
"replicas":{}}}}
{code}
Now, currently the ClusterState object is created by reading clusterstate.json,
but I don't believe it reads /collections/<collection_name>, but perhaps we
should change this?
> 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
> 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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