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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Resolved: (CASSANDRA-242) Implement method to "evenly" split a Range
Date Thu, 27 Aug 2009 13:57:01 GMT


Jonathan Ellis resolved CASSANDRA-242.

    Resolution: Fixed

> Implement method to "evenly" split a Range
> ------------------------------------------
>                 Key: CASSANDRA-242
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>    Affects Versions: 0.4
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 0.4
>         Attachments: CASSANDRA-242.diff, CASSANDRA-242.diff, CASSANDRA-242.diff, CASSANDRA-242.diff,
CASSANDRA-242.diff, CASSANDRA-242_part-1.diff, CASSANDRA-242_part-1.diff, CASSANDRA-242_part-2.diff,
> Two tickets currently depend on being able to deterministically split a Range object
into two "even" Ranges.
> This can be accomplished with RandomPartitioner/BigIntegerToken by taking the average
of the tokens, but the OrderPreservingPartitioner/StringToken implementation uses a Java Collator
to define the sort order of Tokens, which means that they are not necessarily sorted in byte/char
> Collator.getCollationKey(String).toByteArray() gets you a sortable byte array, but there
is no publicly accessible API for converting a similar byte array back into a String.

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