Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/22881#discussion_r229104197
--- Diff: docs/configuration.md ---
@@ -761,6 +761,17 @@ Apart from these, the following properties are also
available, and may be useful
Compression will use <code>spark.io.compression.codec</code>.
</td>
</tr>
+<tr>
+ <td><code>spark.eventLog.allowErasureCoding</code></td>
+ <td>false</td>
+ <td>
+ Whether to allow event logs to use erasure coding, or turn erasure
coding off, regardless of
+ filesystem defaults. On HDFS, erasure coded files will not update as
quickly as regular
+ replicated files, so they application updates will take longer to
appear in the History Server.
--- End diff --
s/they/the
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