rkhachatryan commented on pull request #14056:
URL: https://github.com/apache/flink/pull/14056#issuecomment-726595759
Blink `ExplainTest.testExplainMultipleInput` failed because of the exact
matching of the generated explain plain.
Looks like Blink generates a descriptive name and passes it to
`MultipleInputTransformation`:
```
MultipleInput(readOrder=[1,0], members=[
HashJoin(joinType=[InnerJoin], where=[=(a, d)], select=[a, EXPR$1, d,
EXPR$10], build=[right])
:- HashAggregate(isMerge=[true], groupBy=[a], select=[a, Final_SUM(sum$0)
AS EXPR$1])
: +- [#1] Exchange(distribution=[hash[a]])
+- HashAggregate(isMerge=[true], groupBy=[d], select=[d, Final_SUM(sum$0)
AS EXPR$1])
+- [#2] Exchange(distribution=[hash[d]])
])
```
My change adds (or replaces this with) `[Partition, Partition]`.
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