Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3651#discussion_r21641703
--- Diff: yarn/pom.xml ---
@@ -152,6 +147,15 @@
</environmentVariables>
</configuration>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-surefire-plugin</artifactId>
+ <configuration>
+ <environmentVariables>
+ <SPARK_HOME>${basedir}/../..</SPARK_HOME>
--- End diff --
This is ok, but a little verbose. What I've seen other projects do is
define a "pathToRoot" variable that is referenced in the common configuration
in the root pom. Then modules that rely on this env variable being set can
override "pathToRoot" to have the right relative path.
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