operat专题
EFCore：多线程中使用仓储方法，报错A second operation was started on this context instance before a previous operat
报错信息：上下文实例在销毁后又被第二次使用 System.InvalidOperationException: A second operation was started on this context instance before a previous operation completed. This is usually caused by different threads con
![Ambaris Hive创建自定义函数报错 Principal [name=hdfs, type=USER] does not have following privileges for operat](https://img-blog.csdnimg.cn/64887ea21a3d4692bc48e2de0e3d3316.png)
Ambaris Hive创建自定义函数报错 Principal [name=hdfs, type=USER] does not have following privileges for operat
文章目录 环境报错内容原因解决方法 环境 Ambari 2.7.5 集群未启动Kerberos 报错内容 > hive0: jdbc:hive2://bigdata-24-194:2181,bigdata-2> create function OneID as 'com.udf.OneIDUDF' using jar 'hdfs:/hive/udf/oneid-udf-1.