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From "Jun Rao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-223) time-based slicing does not work correctly w/ "historial" memtables
Date Fri, 26 Jun 2009 17:03:47 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724612#action_12724612
] 

Jun Rao commented on CASSANDRA-223:
-----------------------------------

The patch looks good to me.


> time-based slicing does not work correctly w/ "historial" memtables
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-223
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-223
>             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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