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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1325) Hbase wants to have large heaps, GC wants to touch every object in heap
Date Mon, 29 Mar 2010 00:10:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12850758#action_12850758
] 

ryan rawson commented on HBASE-1325:
------------------------------------

yeah i really dont know why this issue is open (or filed, etc).

Closed!

> Hbase wants to have large heaps, GC wants to touch every object in heap
> -----------------------------------------------------------------------
>
>                 Key: HBASE-1325
>                 URL: https://issues.apache.org/jira/browse/HBASE-1325
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: ryan rawson
>
> HBase wants to have large heaps - store lots of cached objects to make things faster
in RAM.
> But Java garbage collection wants to touch every object in heap.
> How does this work at 3gb heaps?  6gb heaps?  The more ram we can use in HBase the better
performance we can get.  If java GC holds us back, we might need to do something else.

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