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From Sylvain Lebresne <>
Subject Re: OPP seems completely unsupported in Cassandra 1.2.5
Date Tue, 23 Jul 2013 09:08:25 GMT
> - I know that OPP is deprecated. Is it that OPP completely unsupported? Is
> it stated in upgrade instructions or some where? Did we miss it?

Basically yes, OPP is not going to work in 1.2 because of the System
tables. I don't think you'll find any upgrade instructions anywhere because
to be honest, I don't think anyone realized that these new system tables
would break OPP because I think everyone had forgotten than OPP was
existing (rather, when we talk of OPP, we generally imply
ByteOrderedPartitioner).  It's been deprecated for a long time.

> - I could not find any related discussion or jira records about similar
> issue.

I'd suggest opening a JIRA. It's too late to change the fact that OPP is
now unsupported I'm afraid, but we should probably make it official by
removing it from the code and documenting that it's unsupported. And it'll
make a reference if anyone else run into that problem.

As for upgrade options, if you are *sure* that all your row keys are
actually ascii, I think switching to ByteOrderedPartitioner would actually
be okay. Otherwise, note sure there is much other choice that manually
migrating all data to a brand new cluster :(


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