Ramesh Kumar Thangarajan created HIVE-23665:
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Summary: Rewrite last_value to first_value to enable streaming
results
Key: HIVE-23665
URL: https://issues.apache.org/jira/browse/HIVE-23665
Project: Hive
Issue Type: Bug
Reporter: Ramesh Kumar Thangarajan
Assignee: Ramesh Kumar Thangarajan
Rewrite last_value to first_value to enable streaming results
last_value cannot be streamed because the intermediate results need to be
buffered to determine the window result till we get the last row in the window.
But if we can rewrite to first_value we can stream the results, although the
order of results will not be guaranteed (also not important)
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