NoSuchMethodError:

报错信息如下

Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.$conforms()Lscala/Predef$$less$colon$less;
	at org.apache.spark.util.Utils$.getSystemProperties(Utils.scala:1722)
	at org.apache.spark.SparkConf.loadFromSystemProperties(SparkConf.scala:73)
	at org.apache.spark.SparkConf.<init>(SparkConf.scala:68)
	at org.apache.spark.SparkConf.<init>(SparkConf.scala:55)
	at mysql$.main(mysql.scala:9)
	at mysql.main(mysql.scala)
	


......

另一种错误如下

Exception in thread "main" java.lang.NoSuchMethodError: 
org.apache.spark.internal.config.TypedConfigBuilder.checkValue(Lscala/Function1;Ljava
/lang/String;)Lorg/apache/spark/internal/config
/TypedConfigBuilder;

这个是版本不一致造成的,详见Table or view not found

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