[jira] Updated: (CASSANDRA-1265) make getBuckets deterministic

["Tyler L. Hobbs (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-1265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tyler L. Hobbs updated CASSANDRA-1265:
--------------------------------------

    Attachment: cassandra-0.6-1265.txt

> make getBuckets deterministic
> -----------------------------
>
>                 Key: CASSANDRA-1265
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1265
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Jonathan Ellis
>            Priority: Minor
>             Fix For: 0.6.4
>
>         Attachments: cassandra-0.6-1265.txt
>
>
> CompactionManager.getBuckets is nondeterministic as explained in the parent issue.
> This can be fixed either by sorting in getBuckets, or requiring that the iterable passed be sorted already.  Either is fine.
> We also need to add some unit tests to CompactionManagerTest for getBuckets.  We need to decouple getBuckets a little to do this sanely; rather than examining sstable length directly or introducing some extra interface, let's declare getBuckets as
>     static Set<List<T>> getBuckets(Iterable<Pair<T, Integer>> files, long min)
> where the integer in the pair is the file size.  Then you can write tests against Strings instead of SSTableReaders.

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