[jira] [Created] (FLINK-37917) Add support for MultiJoinedRowData

["Gustavo de Morais (Jira)" <ji...@apache.org>]

Gustavo de Morais created FLINK-37917:
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             Summary: Add support for MultiJoinedRowData
                 Key: FLINK-37917
                 URL: https://issues.apache.org/jira/browse/FLINK-37917
             Project: Flink
          Issue Type: New Feature
            Reporter: Gustavo de Morais


As part of the MultiJoinOperator implementation, we used JoinedRowData to be able to join multiple inputs and that works well. 

However, a small optimization would be to use implement a new MultiJoinedRowData class for multiple inputs. This RowData could be more efficient when fetching fields by maintaining an internal data structure like an interval tree or map\{fieldId -> inputId} or something else. That would avoid the log2(n) operation of navigating the JoinedRowData before fetching the field value.



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