Sunil Pedapudi created BEAM-13541:
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Summary: Use runtime information to improve CoGroupByKey caching
Key: BEAM-13541
URL: https://issues.apache.org/jira/browse/BEAM-13541
Project: Beam
Issue Type: Improvement
Components: sdk-ideas
Reporter: Sunil Pedapudi
Currently, CoGroupByKey creates UnionTables that are Flattened. The Flattened
output is processed by a GroupByKey to produce a CoGbkResult (via
ConstructCoGbkResultFn).
Given the performance of CoGBK is greatly impacted based on the which elements
are cached in the (finitely sized) in-memory results, it would be useful if
CoGbkResult can use runtime information to prioritize which elements are stored
in-memory.
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