Kettle 中JavaScript脚本打印日志进行调试

参考链接：https://blog.csdn/u010192145/article/details/102137409

var subject="自定义日志输出";
//实例化日志channel对象
var log= new org.pentaho.di.core.logging.LogChannel(subject);
//日志输出
log.logMinimal("XXXXXXXXXXXXXXXXXXXXXXXX-preRows:"+preRows.size());