Hi.

Thanks for answers. Just to clarify:

1) There is no impact whatsoever for the NameNode / SecondaryNameNode, or
DataNode themselves.

2) Only the client applications using Hadoop / HDFS can take benefit of
these libraries, hence it makes sense to have them installed only on same
nodes as the client applications.


Also, what are the functions which are related to these libraries?

Regards.

2009/9/29 Jason Venner <jason.had...@gmail.com>

> The codec's are run on the client side, so no effect other than reduced
> storage / transfer time on the Datanode.
> The native codecs are generally more cpu efficient and there for time
> efficient on the client side.
>
> On Mon, Sep 28, 2009 at 5:39 PM, Stas Oskin <stas.os...@gmail.com> wrote:
>
> > Hi.
> >
> > I have a question - are hadoop native libraries for Hadoop compression,
> > have/going to have any impact on HDFS?
> >
> > Regards.
> >
>
>
>
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