How to resolve the error `org.apache.hadoop.net.ConnectTimeoutException: 60000 millis timeout` in NebulaGraph Explorer?

Question

It seems that the HDFS configuration associated with my NebulaGraph Explorer is faulty.

org.apache.hadoop.net.ConnectTimeoutException: 60000 millis timeout

Answer 1

Check whether the HDFS datanode port 50010 is open.

If the port is not opened, an error similar to the following may be reported:

• Check failed: false close hdfs-file failed

• org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /analytics/xx/tasks/analytics_xxx/xxx.csv could only be replicated to 0 nodes instead of minReplication