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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2010/06/26 23:37:51 UTC
[jira] Updated: (CASSANDRA-1232) UTF8Type.compare() is slow and
dangerous
[ https://issues.apache.org/jira/browse/CASSANDRA-1232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-1232:
--------------------------------------
Fix Version/s: 0.6.4
> UTF8Type.compare() is slow and dangerous
> ----------------------------------------
>
> Key: CASSANDRA-1232
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1232
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Folke Behrens
> Fix For: 0.6.4
>
>
> UTF8Type converts both byte arrays into Strings and then compares them. This is unnecessary and slow because UTF-8 encoded Strings are already directly comparable. Higher codepoints yield higher initial and subsequent bytes. One can safely use BytesType.compare() for UTF-8. Maybe UTF8Type should be a subclass only overriding getString().
> BTW, It's also dangerous to ignore invalid byte sequences. At this point the byte array should contain valid UTF-8.
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