[jira] [Assigned] (HBASE-14556) Make prefetchOnOpen configurable for index and/or data blocks

["Alicia Ying Shu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-14556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alicia Ying Shu reassigned HBASE-14556:
---------------------------------------

    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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