Fabian Hueske created FLINK-2871:
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Summary: Add OuterJoin strategy with HashTable on outer side
Key: FLINK-2871
URL: https://issues.apache.org/jira/browse/FLINK-2871
Project: Flink
Issue Type: New Feature
Components: Local Runtime, Optimizer
Affects Versions: 0.10
Reporter: Fabian Hueske
Priority: Minor
Outer joins are currently supported with two local execution strategies:
- sort-merge join
- hash join where the hash table is built on the inner side. Hence, this
strategy is only supported for left and right outer joins.
In order to support hash-tables on the outer side, we need a special hash table
implementation that gives access to all records which have not been accessed
during the probe phase.
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