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Subject [GitHub] [spark] viirya opened a new pull request #29705: [SPARK-32819][SQL][3.0] ignoreNullability parameter should be effective recursively
Date Thu, 10 Sep 2020 05:05:38 GMT

viirya opened a new pull request #29705:
URL: https://github.com/apache/spark/pull/29705


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   ### What changes were proposed in this pull request?
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   This patch proposes to check `ignoreNullability` parameter recursively in `equalsStructurally`
method. This backports #29698 to branch-3.0.
   
   ### Why are the changes needed?
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   `equalsStructurally` is used to check type equality. We can optionally ask to ignore nullability
check. But the parameter `ignoreNullability` is not passed recursively down to nested types.
So it produces weird error like:
   
   ```
   data type mismatch: argument 3 requires array<array<string>> type, however
... is of array<array<string>> type.
   ```
   
   when running the query `select aggregate(split('abcdefgh',''), array(array('')), (acc,
x) -> array(array( x ) ) )`.
   
   ### Does this PR introduce _any_ user-facing change?
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   Yes, fixed a bug when running user query.
   
   ### How was this patch tested?
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   Unit tests.
   


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