pan3793 commented on PR #37483:
URL: https://github.com/apache/spark/pull/37483#issuecomment-1554409912
IMO we need to partially backport this patch to branch-3.3.
The base64 function behavior changed since SPARK-37820 (3.3.0), causes some
queries, e.g. `select unbase64("abcs==")`, which can execute succeeded in
pre-3.3 but failed in 3.3.x
```
spark-sql> select unbase64("abcs==");
23/05/19 16:21:07 ERROR SparkSQLDriver: Failed in [select unbase64("abcs==")]
java.lang.IllegalArgumentException: Input byte array has wrong 4-byte ending
unit
```
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