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Posted to dev@lucene.apache.org by "Varun Thacker (JIRA)" <ji...@apache.org> on 2015/09/22 06:05:04 UTC
[jira] [Commented] (SOLR-8081) When creating a collection, we need
a way to utilize multiple disks available on a node.
[ https://issues.apache.org/jira/browse/SOLR-8081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14901891#comment-14901891 ]
Varun Thacker commented on SOLR-8081:
-------------------------------------
bq. I'm aware that I could create the collection with rf=1
We could create a coreless collection and then have the ability to control the dataDir for all replicas.
It will be really good if replica placement strategy could have this feature.
> When creating a collection, we need a way to utilize multiple disks available on a node.
> ----------------------------------------------------------------------------------------
>
> Key: SOLR-8081
> URL: https://issues.apache.org/jira/browse/SOLR-8081
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Timothy Potter
>
> Currently, if I want to change the dataDir for a core (such as to utilize multiple disks on a Solr node), I need to either setup a symlink or change the dataDir property in core.properties and restart the Solr node. For instance, if I have a 4-node SolrCloud cluster and want to create a collection with 4 shards with rf=2, then 8 Solr cores will be created across the cluster, 2 per node. If I want to have each core use a separate disk, then I have to do that after the fact. I'm aware that I could create the collection with rf=1 and then use AddReplica to add additional replicas with a different dataDir set, but that feels cumbersome as well.
> What would be nice is to have a way for me to specify available disks and have Solr use that information when provisioning cores on the node. [~anshumg] mentioned this might be best accomplished with a replica placement strategy.
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