viirya opened a new issue, #1015:
URL: https://github.com/apache/datafusion-comet/issues/1015
### Describe the bug
Spark named_struct expression doesn't forbid duplicate field names. Comet
named_struct implementation follows Spark.
However, Java Arrow when importing arrays, it binds arrays by field name. So
if you have a struct array with duplicate field names, an error like this will
be thrown:
```
org.apache.spark.SparkException: Job aborted due to stage failure: Task 0
in stage 5959.0 failed 1 times, most recent failure: Lost task 0.0 in stage
5959.0 (TID 15003) (192.168.86.44 executor driver): java.lang.IllegalStateExcep
tion: ArrowArray struct has 2 children (expected 1)
```
### Steps to reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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