1、create job 时：

There are issues with entered data, please revise your input:

说明配置有错，请重新检查各输入项

 

2、create job 时：

Last value is required during incremental read

是因为Check column: 输入了值，所以要求输入 Last value

 

3、接上一问题，输入Last value后：

Size of input exceeds allowance for this input field. Maximal allowed size is -1

怎么都没办法输入正确，一个字符也不行，重新配置时把Check column 项清空就好了

 

4、start job -j 1时:

Exception has occurred during processing command
Exception: org.apache.sqoop.common.SqoopException Message: CLIENT_0001:Server has returned exception

根本不知道这个提示说什么，通过修改设置：

set option --name verbose --value true

，再次执行 start job -j 1，显示出有用的出错信息：

Exception has occurred during processing command Exception: org.apache.sqoop.common.SqoopException Message: CLIENT_0001:Server has returned exception Stack trace: at org.apache.sqoop.client.request.ResourceRequest (ResourceRequest.java:129) ... Caused by: Exception: org.apache.sqoop.common.SqoopException Message: GENERIC_HDFS_CONNECTOR_0007:Invalid output directory - Unexpected exception Stack trace: at org.apache.sqoop.connector.hdfs.HdfsToInitializer (HdfsToInitializer.java:71) ... Caused by: Exception: java.net.ConnectException Message: Call From localhost.localdomain/127.0.0.1 to localhost:8020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused Stack trace: at sun.reflect.NativeConstructorAccessorImpl (NativeConstructorAccessorImpl.java:-2) ... Caused by: Exception: java.net.ConnectException Message: 拒绝连接 Stack trace: at sun.nio.ch.SocketChannelImpl (SocketChannelImpl.java:-2) ...

 在$HADOOP_HOME/etc/hadoop/core-site.xml 检查默认端口为 9000，重新修改连到HDFS的Link配置，重新执行job，问题解决。