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https://issues.apache.org/jira/browse/HBASE-14556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alicia Ying Shu reassigned HBASE-14556:
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    Assignee: Alicia Ying Shu

> Make prefetchOnOpen configurable for index and/or data blocks
> -------------------------------------------------------------
>
>                 Key: HBASE-14556
>                 URL: https://issues.apache.org/jira/browse/HBASE-14556
>             Project: HBase
>          Issue Type: Bug
>          Components: BlockCache, regionserver
>            Reporter: Lars George
>            Assignee: Alicia Ying Shu
>
> This came up in user discussions. It would be great to add an extra option to 
> the {{CacheConfig}} that allows to specify what blocks are cached during 
> region/file opening. This should allows to set {{BlockIndexOnly}}, 
> {{BloomFilterOnly}}, {{AllIndexesOnly}}, {{DataOnly}}, and {{AllBlocks}}. 
> For large datasets it is not viable to load all blocks into memory, but to 
> speed up access it still makes sense to prefetch the index blocks (being 
> block index and Bloom filter blocks).



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