u014231534的博客

Hadoop3.3.0一个小坑，slaves文件更名为workers，启动时slaves都启动不了。master上倒是起来了DATANODE, NAMENODE, NODEMANAGER, SECONDARNAMENODE, RESOURCEMANAGR,JPS。修改slaves文件名为workers后重启，就正常了。正常启动集群时，master上只有NAMENODE,RESOURCEMANAGR,SECONDARNAMENODE, JPS。slave上有AGENTSERVERMAIN, DATAN..

SQOOP1.99.7 sqoop2-tool verify报错。去hive的lib下拷贝高版本derby的jar包到sqoop的server/lib下。重新执行即可。

参考：https://blog.youkuaiyun.com/m_signals/article/details/53190965https://blog.youkuaiyun.com/qq_24871519/article/details/86524349Hadoop3.3.0，sqoop1.99.7，hive3.1.2，mysql5.7其中遇到3个问题1，GENERIC_HDFS_CONNECTOR_0007:Invalid input/output directory - Unexpected excepti