gaborgsomogyi commented on a change in pull request #27637: [SPARK-30874][SQL]
Support Postgres Kerberos login in JDBC connector
URL: https://github.com/apache/spark/pull/27637#discussion_r385103632
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File path: docs/sql-data-sources-jdbc.md
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@@ -197,6 +197,20 @@ the following case-insensitive options:
The option to enable or disable predicate push-down into the JDBC data
source. The default value is true, in which case Spark will push down filters
to the JDBC data source as much as possible. Otherwise, if set to false, no
filter will be pushed down to the JDBC data source and thus all filters will be
handled by Spark. Predicate push-down is usually turned off when the predicate
filtering is performed faster by Spark than by the JDBC data source.
</td>
</tr>
+
+ <tr>
+ <td><code>keytab</code></td>
Review comment:
> Another question I have is whether postgres (at least, since that's what
this change covers) can use auth data from the current logged in subject, in
which case the above discussion could be solved by extending Spark's principal
/ keytab support to the executor processes too.
I've gone through the documentation + scanned the code but not found such
possibility.
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