jkdll edited a comment on issue #3113:
URL: https://github.com/apache/hudi/issues/3113#issuecomment-864336980
I have also tested with the latest version on the `master` branch. Same
error.
Moreover, without `--transformer-class
org.apache.hudi.utilities.transform.FlatteningTransformer` I get this error
within the application logs:
```
21/06/19 01:10:36 ERROR HoodieWriteHandle: Error writing record
HoodieRecord{key=HoodieKey { recordKey=39662 partitionPath=1616684167},
currentLocation='null', newLocation='null'}
java.lang.ArrayIndexOutOfBoundsException
21/06/19 01:10:36 ERROR HoodieWriteHandle: Error writing record
HoodieRecord{key=HoodieKey { recordKey=39576 partitionPath=1616419975},
currentLocation='null', newLocation='null'}
java.lang.ArrayIndexOutOfBoundsException
21/06/19 01:10:36 ERROR HoodieWriteHandle: Error writing record
HoodieRecord{key=HoodieKey { recordKey=39575 partitionPath=1616419975},
currentLocation='null', newLocation='null'}
java.lang.ArrayIndexOutOfBoundsException
21/06/19 01:10:36 ERROR HoodieWriteHandle: Error writing record
HoodieRecord{key=HoodieKey { recordKey=39589 partitionPath=1616426425},
currentLocation='null', newLocation='null'}
java.lang.ArrayIndexOutOfBoundsException
21/06/19 01:10:36 ERROR HoodieWriteHandle: Error writing record
HoodieRecord{key=HoodieKey { recordKey=37234 partitionPath=1616426425},
currentLocation='null', newLocation='null'}
```
I believe is triggered due to UNION structs. I believe the flatten
transformer "fixes" this by flattening the struct, however it is only a
workaround.
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