Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/4350#discussion_r24267242
--- Diff: docs/running-on-yarn.md ---
@@ -105,6 +105,13 @@ Most of the configs are the same for Spark on YARN as
for other deployment modes
</td>
</tr>
<tr>
+ <td><code>spark.executor.instances</code></td>
+ <td>2</td>
+ <td>
+ The number of executors. Don't set this when dynamic allocation is
enabled as they are not compatible.
--- End diff --
This is only used in YARN. I will add this when I merge
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