[GitHub] [iceberg] RussellSpitzer commented on issue #7586: Rewrite with zORDER results in 'Cannot find field 'ICEZVALUE' in struct' Error

["RussellSpitzer (via GitHub)" <gi...@apache.org>]

RussellSpitzer commented on issue #7586:
URL: https://github.com/apache/iceberg/issues/7586#issuecomment-1544179907

   The error is due to Partition Evolution. The ShufflingDataWriter attempts to do a partitioned based shuffle along with the sort order when dealing with files not written in the output partition spec.
   
   https://github.com/apache/iceberg/blob/master/spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/actions/SparkShufflingDataRewriter.java#L120
   
   The problem is that for ZOrder tables the SortOrder() is on a column which does not exist in "table()" because it is the computed Z value. This Causes the sort order builder to fail. It instead needs to use the schema of the table + the Zorder column to create the correct output order.


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