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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-223) time-based slicing does not work correctly w/ "historial" memtables
Date Thu, 25 Jun 2009 21:34:07 GMT


Jonathan Ellis updated CASSANDRA-223:

    Attachment: 223-2-v2.patch

oops.  already had to rebase.

> time-based slicing does not work correctly w/ "historial" memtables
> -------------------------------------------------------------------
>                 Key: CASSANDRA-223
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jonathan Ellis
>         Attachments: 223-2-v2.patch, 223-2.patch, 223.patch
> TimeFilter assumes that it is done as soon as it finds a column stamped earlier than
what it is filtering on, but when you have a group of "historical" memtables whose columns
were written in an arbitrary order this is not a safe assumption.
> It is not even a safe assumption when dealing with a single memtable + sstable pair,
as the attached new test shows.

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