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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11364) [BlockCache] Add a flag to cache data blocks in L1 if multi-tier cache
Date Mon, 16 Jun 2014 21:48:01 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-11364:
--------------------------

    Attachment: 11364.txt

Adds to CacheConfig a flag cacheDataInL1.  Adds override to BlockCache#cacheBlock that takes
the setting of this flag.  Acts on this flag in CombinedBlockCache.  I set this flag on all
system tables.  I added a test that this flag has an effect.  Also tried it here locally to
prove it works.

I went through LruBlockCache and the doc doing fixup of IN_MEMORY and another pass over the
block cache seciton.  When this edit goes in, will close HBASE-9131 because has that detail
here.

> [BlockCache] Add a flag to cache data blocks in L1 if multi-tier cache
> ----------------------------------------------------------------------
>
>                 Key: HBASE-11364
>                 URL: https://issues.apache.org/jira/browse/HBASE-11364
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Assignee: stack
>         Attachments: 11364.txt
>
>
> This is a prerequisite for HBASE-11323 BucketCache on all the time.  It addresses a @lars
hofhansl ask that we be able to ask that for some column families, even their data blocks
get cached up in the LruBlockCache L1 tier in a multi-tier deploy as happens when doing BucketCache
(CombinedBlockCache) setups.



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