Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/859#discussion_r12989735
--- Diff: make-distribution.sh ---
@@ -102,6 +84,33 @@ while (( "$#" )); do
shift
done
+if [ -z "$JAVA_HOME" ]; then
+ echo "Error: JAVA_HOME is not set, cannot proceed."
+ exit -1
+fi
+
+VERSION=$(mvn help:evaluate -Dexpression=project.version 2>/dev/null |
grep -v "INFO" | tail -n 1)
+if [ $? != 0 ]; then
+ echo -e "You need Maven installed to build Spark."
+ echo -e "Download Maven from https://maven.apache.org/";
+ exit -1;
+fi
+
+JAVA_CMD="$JAVA_HOME"/bin/java
+JAVA_VERSION=$("$JAVA_CMD" -version 2>&1)
+if [[ ! "$JAVA_VERSION" =~ "1.6" && -z "$SKIP_JAVA_TEST" ]]; then
+ echo "***NOTE***: JAVA_HOME is not set to a JDK 6 installation. The
resulting"
+ echo " distribution will not support Java 6. See SPARK-1703."
--- End diff --
Sadly, this is not enough! Even if people run on Java 7, pyspark on YARN
will fail if the assembly is compiled with Java 7.
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