问题

当前采用python利用structstreaming写入hive table时，始终没有写入的权限，报错如下：

Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):Permission denied : user=xxx, access="WRITE", inode="/":hdfs:supergroup:drwxr-xr-x

根据查询了解到，structstreaming持久化写入数据时，需要配置checkpointLocation参数，不然会写入默认路径：根目录下面，但是根目录没有写入权限，所以会报错；
以下是查询的结果：

This scenario is ideal for long-term persistence of output. Unlike memory and console sinks, files and directories are fault-tolerant. As such, this option requires a checkpoint directory, where state is maintained for fault-tolerance.

附上查询结果网址如下：https://databricks.com/blog/2017/04/04/real-time-end-to-end-integration-with-apache-kafka-in-apache-sparks-structured-streaming.html