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https://issues.apache.org/jira/browse/CASSANDRA-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-1034:
----------------------------------------
Attachment: 0003-unit-test-v3.patch
0002-Remove-assumption-that-token-and-keys-are-one-to-one-v3.patch
0001-Generify-AbstractBounds-v3.patch
Attaching v3, rebased and using an enum for the RowPosition kind. I could have
changed a few {{assert key instanceof DecoratedKey}} by {{assert key.kind() ==
RowPosition.Kind.ROW_KEY}} I suppose, but I prefered keeping the instanceof
since each time the next line do a cast to DK, so this feels more coherent like
that.
> Remove assumption that Key to Token is one-to-one
> -------------------------------------------------
>
> Key: CASSANDRA-1034
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1034
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stu Hood
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 1.1
>
> Attachments: 0001-Generify-AbstractBounds-v2.patch,
> 0001-Generify-AbstractBounds-v3.patch, 0001-Generify-AbstractBounds.patch,
> 0002-Remove-assumption-that-token-and-keys-are-one-to-one-v2.patch,
> 0002-Remove-assumption-that-token-and-keys-are-one-to-one-v3.patch,
> 0002-Remove-assumption-that-token-and-keys-are-one-to-one.patch,
> 0003-unit-test-v2.patch, 0003-unit-test-v3.patch, 0003-unit-test.patch,
> 1034_v1.txt, CASSANDRA-1034.patch
>
>
> get_range_slices assumes that Tokens do not collide and converts a KeyRange
> to an AbstractBounds. For RandomPartitioner, this assumption isn't safe, and
> would lead to a very weird heisenberg.
> Converting AbstractBounds to use a DecoratedKey would solve this, because the
> byte[] key portion of the DecoratedKey can act as a tiebreaker.
> Alternatively, we could make DecoratedKey extend Token, and then use
> DecoratedKeys in places where collisions are unacceptable.
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