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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-7117) AutoAddReplicas should have a cluster wide property for controlling number of cores hosted on each node
Date Wed, 18 Feb 2015 20:44:13 GMT

    [ https://issues.apache.org/jira/browse/SOLR-7117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14326525#comment-14326525
] 

Mark Miller commented on SOLR-7117:
-----------------------------------

bq. In this should the check be only for node3 since node2 is already hosting the replica.
Unless "r2-4" meant node2 or node4

I think that '-' notation has been removed (it's probably just ignored now). I think you used
to specify the state that way. -4 prob would have been 'recovery failed' state.

But yeah, looks like it should just be NODE3 with that not working anymore.

I'm guessing it's meant to be (now): "csr1R*r2Fsr3r4r5"

bq. Should we keep the property name "maxCoresPerNode" 

Sounds reasonable to me.

> AutoAddReplicas should have a cluster wide property for controlling number of cores hosted
on each node
> -------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-7117
>                 URL: https://issues.apache.org/jira/browse/SOLR-7117
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Varun Thacker
>            Priority: Minor
>             Fix For: Trunk, 5.1
>
>         Attachments: SOLR-7117.patch, SOLR-7117.patch
>
>
> Currently when finding the best node to host the failed replicas, we respect the maxShardsPerNode
property. This is not an ideal solution as it's a per collection property and we need a cluster
wide property. Also using maxShardsPerNode can lead to unequal distribution of replicas across
nodes.
> We should just let users use the CLUSTERPROP API to set the max number of cores to be
hosted on each node and use that value while picking the node the replica will be hosted on.



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