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From "Jonathan Gray (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4422) Move block cache parameters and references into single CacheConf class
Date Wed, 05 Oct 2011 01:25:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Gray updated HBASE-4422:
---------------------------------

    Attachment: CacheConfig92-v8.patch

Most recent patch from RB.  All tests are passing.

I will definitely be pulling this into our internal 92 branch and will be building some other
stuff on top of it (compressed cache, etc).  It will probably be easiest to integrate the
DeltaEncoding stuff with this in place as well.

For that reason, I'd be interested in getting it into 92 branch, it should be low risk.
                
> 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
>
>
> 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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