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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4422) Move block cache parameters and references into single CacheConf class
Date Thu, 16 Feb 2012 06:53:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13209165#comment-13209165
] 

Phabricator commented on HBASE-4422:
------------------------------------

mbautin has committed the revision "[jira] [HBASE-4422] [89-fb] Move block cache parameters
and references into single CacheConfig class".

REVISION DETAIL
  https://reviews.facebook.net/D1341

COMMIT
  https://reviews.facebook.net/rHBASEEIGHTNINEFBBRANCH1239901

                
> Move block cache parameters and references into single CacheConf class
> ----------------------------------------------------------------------
>
>                 Key: HBASE-4422
>                 URL: https://issues.apache.org/jira/browse/HBASE-4422
>             Project: HBase
>          Issue Type: Improvement
>          Components: io
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>             Fix For: 0.92.0
>
>         Attachments: CacheConfig92-v8.patch, D1341.1.patch, HBASE-4422-FINAL-branch92.patch,
HBASE-4422-FINAL-trunk.patch
>
>
> From StoreFile down to HFile, we currently use a boolean argument for each of the various
block cache configuration parameters that exist.  The number of parameters is going to continue
to increase as we look at compressed cache, delta encoding, and more specific L1/L2 configuration.
 Every new config currently requires changing many constructors because it introduces a new
boolean.
> We should move everything into a single class so that modifications are much less disruptive.

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