[
https://issues.apache.org/jira/browse/CASSANDRA-2917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068087#comment-13068087
]
Jonathan Ellis commented on CASSANDRA-2917:
-------------------------------------------
Right, that's why I said "Easy: expose gBT."
But again, more useful to expose the sampling data so you can do things like
"divide it into thirds so I can add two nodes."
> expose calculate midrange for token in jmx
> ------------------------------------------
>
> Key: CASSANDRA-2917
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2917
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jackson Chung
> Priority: Minor
> Labels: lhf
>
> currently there is no easy way to get midrange, especially for OPP. For
> simplicity, you could call OrderPreservingPartitioner.midpoint(Token, Token),
> that gives you a rough estimate (and you'd still need to remove non-utf8
> characters.)
> A more accurate but difficult way is to sample the keys in that range and
> pick the midpoint of those. We should expose that via jmx, because without
> this, supporting OPP w/o this is quite challenging.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
