1.client mode: In client mode, the driver is launched in the same process as the client that submits the application..也就是说在Client模式下,Driver进程会在当前客户端启动,客户端进程一直存在直到应用程序运行结束. 该模式下的工作流程图主要如下: 工作流程如下: 1.启动master和worker . worker负责整个集群的资源管理,worker负责监控自己的cpu
最近在hive里将mr换成spark引擎后,执行插入和一些复杂的hql会触发下面的异常: org.apache.hive.service.cli.HiveSQLException: Error while compiling statement: FAILED: SemanticException Failed to get a spark session: org.apache.hadoop.hive.ql.metadata.HiveException: Failed to create Sp