spark无法启动

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查看logs，错误描述：

Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.spark.depl
oy.worker.Worker
at java.lang.Class.initializeClass(libgcj.so.10)
Caused by: java.lang.ClassNotFoundException: scala.Function1 not found in gnu.gc
j.runtime.SystemClassLoader{urls=[file:./,file:/home/hxf/spark/spark-1.2.0-bin-h
adoop2.4/sbin/../conf/,file:/home/hxf/spark/spark-1.2.0-bin-hadoop2.4/lib/spark-
assembly-1.2.0-hadoop2.4.0.jar,file:/home/hxf/spark/spark-1.2.0-bin-hadoop2.4/li
b/datanucleus-api-jdo-3.2.6.jar,file:/home/hxf/spark/spark-1.2.0-bin-hadoop2.4/l
ib/datanucleus-rdbms-3.2.9.jar,file:/home/hxf/spark/spark-1.2.0-bin-hadoop2.4/li
b/datanucleus-core-3.2.10.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls
=[], parent=null}}
at java.net.URLClassLoader.findClass(libgcj.so.10)
at java.lang.ClassLoader.loadClass(libgcj.so.10)
at java.lang.ClassLoader.loadClass(libgcj.so.10)
at java.lang.Class.initializeClass(libgcj.so.10)

分析错误原因，与libgcj.so.10有关，可能是Java环境没有配置正确，在conf/spark-env.sh中添加一行：export JAVA_HOME=/usr/java/latest解决问题

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