HyukjinKwon commented on a change in pull request #32546:
URL: https://github.com/apache/spark/pull/32546#discussion_r638683212
##########
File path: docs/sql-data-sources-orc.md
##########
@@ -172,3 +172,29 @@ When reading from Hive metastore ORC tables and inserting
to Hive metastore ORC
<td>2.0.0</td>
</tr>
</table>
+
+## Data Source Option
+
+Data source options of ORC can be set via:
+* the `.option`/`.options` methods of
+ * `DataFrameReader`
+ * `DataFrameWriter`
+ * `DataStreamReader`
+ * `DataStreamWriter`
+
+<table class="table">
+ <tr><th><b>Property
Name</b></th><th><b>Default</b></th><th><b>Meaning</b></th><th><b>Scope</b></th></tr>
+ <tr>
+ <td><code>mergeSchema</code></td>
+ <td>None</td>
+ <td>sets whether we should merge schemas collected from all ORC
part-files. This will override <code>spark.sql.orc.mergeSchema</code>. The
default value is specified in <code>spark.sql.orc.mergeSchema</code>.</td>
+ <td>read</td>
+ </tr>
+ <tr>
+ <td><code>compression</code></td>
+ <td>None</td>
Review comment:
In this case when the default value doesn't exist, you can follow
https://spark.apache.org/docs/latest/configuration.html#runtime-sql-configuration
`(none)`.
--
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.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
