[GitHub] [iceberg] pvary edited a comment on pull request #2171: Hive: Fix schema projection issue on Tez

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

pvary edited a comment on pull request #2171:
URL: https://github.com/apache/iceberg/pull/2171#issuecomment-769711970


   > BTW, do we need to change [this assert](https://github.com/apache/iceberg/blob/19622dcfcb426485748fa017a6181e23df5732dc/mr/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergSerDe.java#L112-L118) currently since this issue happens no matter whether `hive.vectorized.execution.enabled` is enabled ?
   
   Testing vectorization is hard. Even if we turn on vectorization we have to check the output of `EXPLAIN VECTORIZATION <QUERY>` to check if the vectorization is actually happening or not, but if you can add a test case which fails even with vectorization disabled that's a good indicator that we definitely need TEZ-4248 or some other solution, and helps investigating the problem


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