[jira] [Created] (FLINK-5159) Improve perfomance of inner joins with a single row input

[Shang Yuanchun (Jira)]

Alexander Shoshin created FLINK-5159:
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             Summary: Improve perfomance of inner joins with a single row input
                 Key: FLINK-5159
                 URL: https://issues.apache.org/jira/browse/FLINK-5159
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Alexander Shoshin
            Assignee: Alexander Shoshin
            Priority: Minor


All inner joins (including a cross join) can be implemented as a {{MapFunction}} if one of their inputs is a single row. This row can be passed to a {{MapFunction}} as a {{BroadcastSet}}.
This approach is going to be more lightweight than the other current strategies.



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