[GitHub] [iceberg] lirui-apache commented on issue #3139: Read ORC table with nested partition column can lead to ArrayIndexOutOfBoundsException

[GitBox <gi...@apache.org>]

lirui-apache commented on issue #3139:
URL: https://github.com/apache/iceberg/issues/3139#issuecomment-925485989


   Hey @openinx , I haven't decided what's the right way to fix this. A possible solution is to improve how we generate `idToConstant` in `RowDataReader::open`. Currently we only put metadata column and partition value into that map. Perhaps we can also do a DFS walk of the required schema, and if all nested fields of a compound type are constants, then the compound column itself can be considered a constant too. Does that make sense to you?


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