Boaz Ben-Zvi created DRILL-6479:
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Summary: Support for EMIT outcome in Hash Aggregate
Key: DRILL-6479
URL: https://issues.apache.org/jira/browse/DRILL-6479
Project: Apache Drill
Issue Type: Improvement
Components: Execution - Relational Operators
Reporter: Boaz Ben-Zvi
Assignee: Boaz Ben-Zvi
Fix For: 1.14.0
With the new Lateral and Unnest -- if a Hash-Aggregate operator is present in
the sub-query, then it needs to handle the EMIT outcome correctly. This means
that when a EMIT is received then perform the aggregation operation on the
records buffered so far and produce the output with it. After handling an EMIT
the Hash-Aggr should refresh it's state and a continue to work on the next
batches of incoming records unless an EMIT is seen again.
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