gaborgsomogyi commented on a change in pull request #31761:
URL: https://github.com/apache/spark/pull/31761#discussion_r594168255
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File path: docs/security.md
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@@ -838,6 +838,17 @@ The following options provides finer-grained control for
this feature:
</td>
<td>3.0.0</td>
</tr>
+<tr>
+ <td><code>spark.kerberos.renewal.exclude.hadoopFileSystems</code></td>
+ <td>(none)</td>
+ <td>
+ A comma-separated list of Hadoop filesystems for whose hosts will be
excluded from from delegation
+ token renewal at resource scheduler. For example,
<code>spark.kerberos.renewal.exclude.hadoopFileSystems=hdfs://nn1.com:8032,
+ hdfs://nn2.com:8032</code>. This is known to work under YARN for now, so
YARN Resource Manager won't renew tokens for the application.
+ Note that as resource scheduler does not renew token, the application
might not be long running once the token expires.
Review comment:
`might not be long running` is a little bit soft in my view. Can you
imagine a situation where token expires and the workload goes on successfully?
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