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https://issues.apache.org/jira/browse/SOLR-5714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Miller updated SOLR-5714:
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Attachment: SOLR-5714.patch
Adds testing that asserts that all the BlockCache instances for each SolrCore
are the same instance when global cache is on and checks for different
instances as it jumps through each SolrCore when the global cache is off.
> You should be able to use one pool of memory for multiple collection's HDFS
> block caches.
> -----------------------------------------------------------------------------------------
>
> Key: SOLR-5714
> URL: https://issues.apache.org/jira/browse/SOLR-5714
> Project: Solr
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Mark Miller
> Fix For: 4.8, 5.0
>
> Attachments: SOLR-5714.patch, SOLR-5714.patch, SOLR-5714.patch,
> SOLR-5714.patch
>
>
> Currently, you have to specify how much direct memory to allocate per
> SolrCore. This can be inefficient, and has some negative consequences - for
> instance, when replicating, many times two HDFS directories will exist for
> the same index briefly, which will double the RAM used for that SolrCore.
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