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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2009/07/31 04:20:14 UTC
[jira] Commented: (CASSANDRA-242) Implement method to "evenly"
split a Range
[ https://issues.apache.org/jira/browse/CASSANDRA-242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737398#action_12737398 ]
Jonathan Ellis commented on CASSANDRA-242:
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Back when we discussed this in IRC, I think we concluded that although there is no way to split a Range, splitting a group of tokens and taking the median is almost as useful.
> Implement method to "evenly" split a Range
> ------------------------------------------
>
> Key: CASSANDRA-242
> URL: https://issues.apache.org/jira/browse/CASSANDRA-242
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Stu Hood
>
> 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 order.
> 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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