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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/12/11 09:05:49 UTC
[GitHub] [spark] amanomer commented on issue #26811: [SPARK-29600][SQL]
array_contains built in function is not backward compatible in 3.0
amanomer commented on issue #26811: [SPARK-29600][SQL] array_contains built in function is not backward compatible in 3.0
URL: https://github.com/apache/spark/pull/26811#issuecomment-564446520
> do you know which PR causes the compatibility issue?
I think this PR https://github.com/apache/spark/pull/22408 which uses `findTightestCommonType()` for casting.
findTightestCommonType() always tries to downcast datatype but in case of decimal, it should upcast the precision.
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