spark+hive运行时没有写权限

当使用spark连接hive时，无论是通过spark-submit提交作业，还是使用spark-shell,spark-sql 都会报以下错误：

Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: The root scratch dir: /tmp/hive on HDFS should be writable. Current permissions are: rwx------

    at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)

    at org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver$.main(SparkSQLCLIDriver.scala:116)

    at org.apache.spark.sql.hive.thriftserver.SparkSQLCLIDriver.main(SparkSQLCLIDriver.scala)

要从两方面考虑哦，

解决方法:

1. 更改HDFS目录/tmp/hive的权限：hadoop fs -chmod 777 /tmp/hive
2. 同时删HDFS与本地的目录/tmp/hive：

   hadoop fs -rm -r /tmp/hive;  

   rm -rf /tmp/hive