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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-2970) Meta blocks should be given their own priority bucket in block cache
Date Mon, 15 Apr 2013 22:28:15 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans resolved HBASE-2970.
---------------------------------------

    Resolution: Won't Fix

Resolving as won't fix because in practice I've never seen this to be an issue.
                
> Meta blocks should be given their own priority bucket in block cache
> --------------------------------------------------------------------
>
>                 Key: HBASE-2970
>                 URL: https://issues.apache.org/jira/browse/HBASE-2970
>             Project: HBase
>          Issue Type: Improvement
>          Components: io, regionserver
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>
> Bloom filters are currently using the LRU block cache.  They are being treated as normal
data blocks, however, it would be advantageous if we could treat me separately and give them
their own portion of the LRU.
> What we've seen in practice is that some blooms get very big and are accessed frequently.
 This leads to blooms consuming a majority of the cache so lots of churn on data blocks.
> In any case, I think it is desirable in general to be able to control how much memory
is used for blooms and other meta data.

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