Description
The default JDK of build environment made by start-build-env.sh is JDK8 from HADOOP-12562. Since current Hadoop trunk cannot be build by JDK8 (HADOOP-11875), it is better to set the default JDK to JDK7 for now.
The default JDK of build environment made by start-build-env.sh is JDK8 from HADOOP-12562. Since current Hadoop trunk cannot be build by JDK8 (HADOOP-11875), it is better to set the default JDK to JDK7 for now.