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Date: Fri, 21 Mar 2008 15:59:24 -0700 (PDT)
From: "Jim Kellerman (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-476) RegexpRowFilter behaves incorectly
 when there are multiple store files
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    [ https://issues.apache.org/jira/browse/HBASE-476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12581212#action_12581212 ] 

Jim Kellerman commented on HBASE-476:
-------------------------------------

Clint,

Would you be willing to upload a version of hbase-476-test2.patch and grant an ASF license for it?

Without an ASF license, we cannot use it as the basis for a test case.

Thanks.

> RegexpRowFilter behaves incorectly when there are multiple store files
> ----------------------------------------------------------------------
>
>                 Key: HBASE-476
>                 URL: https://issues.apache.org/jira/browse/HBASE-476
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: filters
>    Affects Versions: 0.1.0
>            Reporter: Clint Morgan
>            Priority: Blocker
>             Fix For: 0.1.0
>
>         Attachments: hbase-476-test.log, hbase-476-test.patch, hbase-476-test2.patch
>
>
> I noticed that after running some table Map/Reduces, then using a
> RegExpRowFilter to scan through the table,  the scanner misses
> rows when its columns are in different stores.
> This (rather convoluted) unit test provokes the behavior.
> - Set memcache flush size small to trigger multiple stores
> - put in 10 row with 2 columns. Each row has the same value for col1 (which the RowFilter wants to match)
> - Scan with and without the filter to be sure that we get all the rows with each
> - Run an identity table M/R 10 times to fill up the memcache and trigger flush.
> - Scan again. This time the filter does not pickup anything.
> Attaching the log from this run as well.

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