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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-476) RegexpRowFilter behaves incorectly when there are multiple store files
Date Fri, 29 Feb 2008 18:26:51 GMT
RegexpRowFilter behaves incorectly when there are multiple store files
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                 Key: HBASE-476
                 URL: https://issues.apache.org/jira/browse/HBASE-476
             Project: Hadoop HBase
          Issue Type: Bug
          Components: filters
            Reporter: Clint Morgan



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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