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From Richard Grossman <richie...@gmail.com>
Subject Re: Cassandra data distribution and configuration settings
Date Tue, 17 Nov 2009 21:40:27 GMT
Ho do I evaluate the value I need to put here ??
The second point is that I've many column family each with a different key
then how do I know what is the token to distribute the data ??

Thanks

On Tue, Nov 17, 2009 at 7:58 PM, Ramzi Rabah <rrabah@playdom.com> wrote:

> InitialToken is a String for OrderPreservingPartitioner and numeric
> for RandomParitioner.
> It is the token taken by the node on the ring in the hash space.
> You want to set it evenly distributed for each node, across your hashspace.
>
> On Tue, Nov 17, 2009 at 9:41 AM, Jon Graham <sjcloud22@gmail.com> wrote:
> > Hello TR,
> >
> > Thanks for your quick reply :-)
> >
> >  My 128 characted key values are distributed evenly across the "00 ..."
> to
> > "ff ..." data range.
> >
> > I did not set the InitialToken value.  Is this a starting key value for
> each
> > node?
> >
> > Is the InitialToken specified a string?
> >
> > Thanks,
> > Jon
> >
> > On Tue, Nov 17, 2009 at 9:19 AM, TuxRacer69 <tuxracer69@gmail.com>
> wrote:
> >>
> >> Jon,
> >>
> >> what is your key distribution?
> >> did you set
> >>
> >> <InitialToken/>
> >>
> >> on each node according to this distribution?
> >>
> >> TR
> >>
> >>
> >> Jon Graham wrote:
> >>>
> >>> Hello Everyone,
> >>>  I am running a 10 node Cassandra cluster using a recent cassandra
> trunk.
> >>>  After inserting a million data records using  keys of 128 character
> >>> lower case hex digits and
> >>> 1024 data values, I noticed that most all of the is accumulated on only
> 3
> >>> nodes.
> >>>  I am using the OrderPreservingPartitioner setting in the
> >>> storage-conf.xml file.
> >>>  What do I need to take to get a balanced data distribution?
> >>>  Is there a way to limit the size of an individual database file?
> >>>  Is there additonal Cassandra configuration documentation outside of
> the
> >>> storage-conf.xml file?
> >>>  Thanks for your help,
> >>> Jon
> >>>
> >>
> >
> >
>

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