Try cleaning up /home/xisisu/mydata/hdfs/datanode on the slave nodes andvstart 'datanode' on that again. That should work. If it doesn't, send the log message.
Also see if nodemanagers are running on slaves nodes. If everything is running on master, then its not just HDFS issue, its also yarn nodemanagers not running. -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.
