Chengxiang Li created FLINK-3474:
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Summary: Partial aggregate interface design and sort-based
implementation
Key: FLINK-3474
URL: https://issues.apache.org/jira/browse/FLINK-3474
Project: Flink
Issue Type: Sub-task
Components: Table API
Reporter: Chengxiang Li
Assignee: Chengxiang Li
The scope of this sub task includes:
# Partial aggregate interface.
# Simple aggregate function implementation, such as SUM/AVG/COUNT/MIN/MAX.
# DataSetAggregateRule which translate logical calcite aggregate node to Flink
user functions. As hash-based combiner is not available yet(see PR #1517), we
would use sort-based combine as default.
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