Xu Mingmin created BEAM-3171:
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Summary: convert a join into lookup
Key: BEAM-3171
URL: https://issues.apache.org/jira/browse/BEAM-3171
Project: Beam
Issue Type: New Feature
Components: dsl-sql
Reporter: Xu Mingmin
Assignee: Xu Mingmin
We use BeamSQL to run streaming jobs mostly, and add a join_as_lookup
improvement(internal branch) to cover the streaming-to-batch case(similar as
[1]). I could submit a PR as experimental if people are interested.
The rough solution is, if one source of join node implements
{{BeamSeekableTable}} and the other is not, then the join node is converted to
a fact-lookup operation.
Ref:
[1]
https://docs.google.com/document/d/1B-XnUwXh64lbswRieckU0BxtygSV58hysqZbpZmk03A/edit?usp=sharing
[~xumingming] [~takidau] for any comments
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