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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1233) Transactional fixes: Overly conservative scan read-set, potential CME
Date Tue, 03 Mar 2009 00:05:56 GMT
Transactional fixes: Overly conservative scan read-set, potential CME
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                 Key: HBASE-1233
                 URL: https://issues.apache.org/jira/browse/HBASE-1233
             Project: Hadoop HBase
          Issue Type: Improvement
          Components: regionserver
    Affects Versions: 0.19.0
            Reporter: Clint Morgan
            Assignee: Clint Morgan
             Fix For: 0.19.1, 0.20.0


This patch fixes two issues with the OCC transactions:

- Overly conservative read-set. Previously a scanner was claiming read set on the whole region.
This patch gets the read set from the start and end keys that a scanner was opened with (the
start key comes from the arg to open, the end key comes from a WhileMatch(StopRow()) filter
if present. 

- A potential ConcurrentModificationException.

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