scala griffin measure 启动找不到 com.mysql.jdbc.Driver

driver ("com.mysql.jdbc.Driver") was not found in the CLASSPATH

要启动sparksql并访问到Hive，有两个步骤

/opt/cloudera/parcels/CDH-6.3.2-1.cdh6.3.2.p0.1605554/lib/spark/conf

spark-defaults.conf

spark.executor.extraClassPath=/usr/share/java/mysql-connector-java.jar

spark.driver.extraClassPath=/usr/share/java/mysql-connector-java.jar

或者可以将mysql驱动包放到$SPARK_HOME/lib下，但是如果集群升级需要再次操作这个步骤，所以推荐第一个做法。