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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11710) if offheap L2 blockcache, read from DFS into offheap and copy to blockcache without coming onheap
Date Wed, 08 Oct 2014 20:26:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14164101#comment-14164101
] 

Nick Dimiduk commented on HBASE-11710:
--------------------------------------

I think the common case of BucketCache is now to keep data blocks in L2 and leave L1 for index/bloom/meta.
So this would be to populate data blocks into L2 instead of taking data on-heap when L2 is
enabled.

> if offheap L2 blockcache, read from DFS into offheap and copy to blockcache without coming
onheap
> -------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-11710
>                 URL: https://issues.apache.org/jira/browse/HBASE-11710
>             Project: HBase
>          Issue Type: Brainstorming
>          Components: BlockCache, Offheaping
>            Reporter: stack
>            Assignee: stack
>
> Filing issue assigned to myself to take a look at feasibility of our doing this



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