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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-476) RegexpRowFilter behaves incorectly when there are multiple store files
Date Fri, 21 Mar 2008 19:53:28 GMT

     [ https://issues.apache.org/jira/browse/HBASE-476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jim Kellerman updated HBASE-476:
--------------------------------

        Fix Version/s: 0.1.0
             Priority: Blocker  (was: Major)
          Description: 
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.


  was:

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.


    Affects Version/s: 0.1.0

> 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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