ala commented on PR #38777: URL: https://github.com/apache/spark/pull/38777#issuecomment-1333637318
Well, the issue seems to be that the vectorized reader recognizes the row index column as a "missing column" (aka. columns that are not read from the file, but instead populated by a higher layer in the reader). Since these are normally populated with nulls, it's a problem if the data type is non-nullable. https://github.com/apache/spark/blob/0f1c515179e5ed34aca27c51f500c26ca19cc748/sql/core/src/main/java/org/apache/spark/sql/execution/datasources/parquet/VectorizedParquetRecordReader.java#L372-L376 We could tweak this `if` condition to not throw on generate column/row index, or use the workaround you put in place already. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
