Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/7991#discussion_r36416599
--- Diff: docs/configuration.md ---
@@ -474,6 +474,22 @@ Apart from these, the following properties are also
available, and may be useful
</td>
</tr>
<tr>
+ <td><code>spark.shuffle.service.enabled</code></td>
+ <td>false</td>
+ <td>
+ Enables the external shuffle service. This service preserves the
shuffle files written by
+ executors so the executors can be safely removed. This must be enabled
if
--- End diff --
we may want to add that the external shuffle service must be installed for
this to work or point to docs describing that
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