問題

當(dāng)前采用python利用structstreaming寫入hive table時(shí)，始終沒有寫入的權(quán)限，報(bào)錯(cuò)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

根據(jù)查詢了解到，structstreaming持久化寫入數(shù)據(jù)時(shí)，需要配置checkpointLocation參數(shù)，不然會(huì)寫入默認(rèn)路徑：根目錄下面，但是根目錄沒有寫入權(quán)限，所以會(huì)報(bào)錯(cuò)；
以下是查詢的結(jié)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.

附上查詢結(jié)果網(wǎng)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