public SparkPipeline(String sparkConnect, String appName, Class<?> jarClass) {
this(sparkConnect, appName, jarClass, new Configuration());
}
public SparkPipeline(String sparkConnect, String appName, Class<?> jarClass, Configuration conf) {
super(appName, conf, new SparkCollectFactory());
this.sparkConnect = Preconditions.checkNotNull(sparkConnect);
this.jarClass = jarClass;
}