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https://issues.apache.org/jira/browse/HBASE-18138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031496#comment-16031496
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Vladimir Rodionov commented on HBASE-18138:
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Good idea, especially to support multiple tenants.
> HBase named read caches
> -----------------------
>
> Key: HBASE-18138
> URL: https://issues.apache.org/jira/browse/HBASE-18138
> Project: HBase
> Issue Type: New Feature
> Components: BlockCache, BucketCache
> Reporter: Biju Nair
>
> Instead of a single read(block) cache, if HBase can support creation of named
> read caches and use by tables it will help common scenarios like
> - Assigning a chunk of the cache to tables with data which are critical to
> performance so that they don’t get swapped out due to other less critical
> table data being read
> - To be able to guarantee a percentage of the cache to tenants in a multi
> tenant environment by assigning named caches to each tenant
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