[teiid-issues] [JBoss JIRA] Resolved: (TEIID-150) Improve nested loop (in merge join) matching
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https://jira.jboss.org/jira/browse/TEIID-150?page=com.atlassian.jira.plug...
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Steven Hawkins resolved TEIID-150.
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Resolution: Won't Fix
This is probably not worth the effort, since the match loop was not written for batch
handling. This would only be an issue for large nested loop joins (or match regions with
lots of duplicates), which will already have poor performance.
Improve nested loop (in merge join) matching
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Key: TEIID-150
URL: https://jira.jboss.org/jira/browse/TEIID-150
Project: Teiid
Issue Type: Feature Request
Components: Query Engine
Affects Versions: 7.x
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Priority: Minor
Fix For: 6.3
Original Estimate: 1 day
Remaining Estimate: 1 day
Nested loop evaluation should be based upon available blocks rather than fully iterating
the inner side. The simplest approach is to just match a single block from the left and
right at a time.
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