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https://issues.apache.org/jira/browse/CASSANDRA-2917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067495#comment-13067495
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Jonathan Ellis commented on CASSANDRA-2917:
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Dealing with the non-utf8 characters is the responsibility of whoever calls
this. For most cases I imagine you could just strip them out, or you could
"round" to the nearest utf8.
All we want this ticket to do is expose the sampling Cassandra has, so we can
do the rest externally.
> 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.
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