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From Stas Oskin <stas.os...@gmail.com>
Subject Re: Datanode high memory usage
Date Wed, 02 Sep 2009 13:14:10 GMT
Hi.

>
> It would be nice if Java 6 had a way of switching compressed pointers on by
> default -the way JRockit 64 bit did. Right now you have to edit every shell
> script to start up every program,  hadoop included.  Maybe when jdk7 ships
> it will do this by default.
>

Does it give any memory benefits on Datanode as well, in addition to
Namenode?

 Also, just how much RAM is gained by this setting?

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