Spark currently supports two build systems, sbt and maven. sbt will download the correct version of scala, but with Maven you need to supply it yourself and set SCALA_HOME.
It sounds like the instructions need to be updated-- perhaps create a JIRA? best, Colin On Sat, May 31, 2014 at 7:06 PM, Soren Macbeth <so...@yieldbot.com> wrote: > Hello, > > Following the instructions for building spark 1.0.0, I encountered the > following error: > > [ERROR] Failed to execute goal > org.apache.maven.plugins:maven-antrun-plugin:1.7:run (default) on project > spark-core_2.10: An Ant BuildException has occured: Please set the > SCALA_HOME (or SCALA_LIBRARY_PATH if scala is on the path) environment > variables and retry. > [ERROR] around Ant part ...<fail message="Please set the SCALA_HOME (or > SCALA_LIBRARY_PATH if scala is on the path) environment variables and > retry.">... @ 6:126 in > /Users/soren/src/spark-1.0.0/core/target/antrun/build-main.xml > > No where in the documentation does it mention that having scala installed > and either of these env vars set nor what version should be installed. > Setting these env vars wasn't required for 0.9.1 with sbt. > > I was able to get past it by downloading the scala 2.10.4 binary package to > a temp dir and setting SCALA_HOME to that dir. > > Ideally, it would be nice to not have to require people to have a > standalone scala installation but at a minimum this requirement should be > documented in the build instructions no? > > -Soren >
