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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-953) Reevaluate HBASE-288 block caching work; should it be enabled always?
Date Sat, 25 Oct 2008 17:14:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642641#action_12642641
] 

stack commented on HBASE-953:
-----------------------------

1.6.0_10 works fine. 

java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b31)
Java HotSpot(TM) Server VM (build 14.0-b01, mixed mode)

Will OOME.  Stuck doing full GCs.  Works if I enable the JVM flag which says don't OOME if
too many full GCs.

> Reevaluate HBASE-288 block caching work; should it be enabled always?
> ---------------------------------------------------------------------
>
>                 Key: HBASE-953
>                 URL: https://issues.apache.org/jira/browse/HBASE-953
>             Project: Hadoop HBase
>          Issue Type: Task
>            Reporter: stack
>            Priority: Critical
>             Fix For: 0.19.0
>
>
> Go back and take another look at the Tom White work.  We've gotten boost in writing and
scanning because of J-D work.  HBASE-288 looks like it boosts sequential reads and perhaps
random read a little.  Take another look.

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