[teiid-issues] [JBoss JIRA] Created: (TEIID-541) Implement a partitioned merge join

Steven Hawkins (JIRA) jira-events at lists.jboss.org
Fri May 1 14:23:46 EDT 2009


Implement a partitioned merge join
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                 Key: TEIID-541
                 URL: https://jira.jboss.org/jira/browse/TEIID-541
             Project: Teiid
          Issue Type: Feature Request
          Components: Query Engine
    Affects Versions: 6.0.0
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 6.1.0


To obviate the need for a hash join, we should have a scalable partitioned merge join.  The smaller of the two join sides will be sorted and it's batch bounds used to partition the larger side rather than performing a full sort.  

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