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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-2641) AbstractBounds.normalize should deal with overlapping ranges
Date Fri, 27 May 2011 14:14:47 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne updated CASSANDRA-2641:
----------------------------------------

    Attachment: 0001-Make-normalize-deoverlap-ranges.patch

> AbstractBounds.normalize should deal with overlapping ranges
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-2641
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2641
>             Project: Cassandra
>          Issue Type: Test
>          Components: Core
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>            Priority: Minor
>             Fix For: 0.8.1
>
>         Attachments: 0001-Assert-non-overlapping-ranges-in-normalize.txt, 0001-Make-normalize-deoverlap-ranges.patch,
0002-Don-t-use-overlapping-ranges-in-tests.txt
>
>
> Apparently no consumers have encountered it in production, but AbstractBounds.normalize
does not handle overlapping ranges. If given overlapping ranges, the output will be sorted
but still overlapping, for which SSTableReader.getPositionsForRanges will choose ranges in
an SSTable that may overlap.
> We should either add an assert in normalize(), or in getPositionsForRanges() to ensure
that this never bites us in production.

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