Gopal V created TEZ-1073:
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Summary: RLE IFile merge() fastpath
Key: TEZ-1073
URL: https://issues.apache.org/jira/browse/TEZ-1073
Project: Apache Tez
Issue Type: Bug
Affects Versions: 0.5.0
Reporter: Gopal V
Assignee: Gopal V
Priority: Minor
Attachments: TEZ-1073.WIP.patch
IFile iterators actually consist of a tri-state - NEW_KEY, SAME_KEY and NO_KEY.
This can be used to avoid rebalancing the priority queue when the same reader
is returning SAME_KEY in its reader during the initial merge operation in the
reducer.
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