Github user raam86 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20610#discussion_r177712534
--- Diff: docs/sql-programming-guide.md ---
@@ -1784,7 +1784,7 @@ working with timestamps in `pandas_udf`s to get the
best performance, see
<tr><th><b>Property
Name</b></th><th><b>Default</b></th><th><b>Meaning</b></th></tr>
<tr>
<td><code>spark.sql.orc.impl</code></td>
- <td><code>native</code></td>
+ <td><code>hive</code></td>
--- End diff --
Is there a reason the `impl` was changed back to the old implementation?
this breaks `spark.read.orc`
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