Hadoop: …be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and no node(s) are excluded in this operation

Question

I\'m getting the following error when attempting to write to HDFS as part of my multi-threaded application

could only be replicated to 0 nodes instead of min         


        

Answer 1

Another reason could be that your Datanode machine hasn't exposed the port(50010 by default). In my case, I was trying to write a file from Machine1 to HDFS running on a Docker container C1 which was hosted on Machine2. For the host machine to forward the requests to the services running on the container, the port forwarding should be taken care of. I could resolve the issue after forwarding the port 50010 from host machine to guest machine.