Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/17723#discussion_r119778509
--- Diff: core/pom.xml ---
@@ -357,6 +357,34 @@
<groupId>org.apache.commons</groupId>
<artifactId>commons-crypto</artifactId>
</dependency>
+
+ <!--
+ Testing Hive reflection needs hive on the test classpath only.
+ It doesn't need the spark hive modules, so the -Phive flag is not
checked.
+ -->
+ <dependency>
+ <groupId>${hive.group}</groupId>
+ <artifactId>hive-exec</artifactId>
--- End diff --
> Why not just add the Hive dependencies to compile scope?
Because technically Hive is an optional dependency for Spark, and moving it
to compile scope would break that.
(Whether that should change or not is a separate discussion, but probably
better not to have it as part of this change.)
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