启动spark- sqI时：Error: A JNI error has occurred, please check your installation and try again Exceptio

错误信息：
Error: A JNI error has occurred, please check your installation and try again
Exception in thread “main” java.lang.NoClassDefFoundError: org/slf4j/Logger

解决：
命令行临时导入下面这个变量，或者配置到环境变量中，即可。

	#添加Hadoop的classpath到SPARK_DIST_CLASSPAHT中
export SPARK_DIST_CLASSPATH=$(hadoop classpath)

参考blog：

http://www.cnblogs.com/chenzechao/p/10204263.html