Fabian Hueske created FLINK-3480:
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Summary: Add hash-based strategy for ReduceFunction
Key: FLINK-3480
URL: https://issues.apache.org/jira/browse/FLINK-3480
Project: Flink
Issue Type: Sub-task
Components: Local Runtime
Reporter: Fabian Hueske
This issue is related to FLINK-3477.
While FLINK-3477 proposes to add hash-based combine strategy for
ReduceFunction, this issue aims to add a hash-based strategy for the final
aggregation.
This will need again a special hash-table aggregation which allows for in-place
updates and append updates. However, it also needs to support spilling to disk
in case of too tight memory budgets.
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