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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/building-with-maven.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/building-with-maven.md b/docs/building-with-maven.md index d3bc34e68b..730a6e7932 100644 --- a/docs/building-with-maven.md +++ b/docs/building-with-maven.md @@ -88,3 +88,9 @@ Running only java 8 tests and nothing else. Java 8 tests are run when -Pjava8-tests profile is enabled, they will run in spite of -DskipTests. For these tests to run your system must have a JDK 8 installation. If you have JDK 8 installed but it is not the system default, you can set JAVA_HOME to point to JDK 8 before running the tests. + +## Packaging without Hadoop dependencies for deployment on YARN ## + +The assembly jar produced by "mvn package" will, by default, include all of Spark's dependencies, including Hadoop and some of its ecosystem projects. On YARN deployments, this causes multiple versions of these to appear on executor classpaths: the version packaged in the Spark assembly and the version on each node, included with yarn.application.classpath. The "hadoop-provided" profile builds the assembly without including Hadoop-ecosystem projects, like ZooKeeper and Hadoop itself. + + |