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From "Jie Huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6312) Make BlockCache eviction thresholds configurable
Date Wed, 04 Jul 2012 13:30:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406507#comment-13406507
] 

Jie Huang commented on HBASE-6312:
----------------------------------

Thanks for those detailed explainations. Yes, you are right. The bigger cache size makes different
of course. The end user somehow can increase the cache size without tuning that acceptable
factor.  From the customer's perspective, it is much easier to configure them than re-compiling
the code from time to time.  According to your suggestion, shall we need to make that gap
(between the minimum and acceptable factor) configurable at least?
                
> Make BlockCache eviction thresholds configurable
> ------------------------------------------------
>
>                 Key: HBASE-6312
>                 URL: https://issues.apache.org/jira/browse/HBASE-6312
>             Project: HBase
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.94.0
>            Reporter: Jie Huang
>            Priority: Minor
>         Attachments: hbase-6312.patch
>
>
> Some of our customers found that tuning the BlockCache eviction thresholds made test
results different in their test environment. However, those thresholds are not configurable
in the current implementation. The only way to change those values is to re-compile the HBase
source code. We wonder if it is possible to make them configurable.

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