Github user dongjoon-hyun commented on a diff in the pull request: https://github.com/apache/spark/pull/20484#discussion_r167681992 --- Diff: docs/sql-programming-guide.md --- @@ -1776,6 +1776,35 @@ working with timestamps in `pandas_udf`s to get the best performance, see ## Upgrading From Spark SQL 2.2 to 2.3 + - Since Spark 2.3, Spark supports a vectorized ORC reader with a new ORC file format for ORC files. To do that, the following configurations are newly added or change their default values. For creating ORC tables, `USING ORC` or `USING HIVE` syntaxes are recommended. --- End diff -- Hm. Right. What about mentioning `convertMetastoreOrc` is safe with `USING HIVE` then?
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