During the admin class two interesting questions on decommissioning worker nodes emerged: - How does the decommissioning process stops the ApplicationMaster? Will it let the containers complete its current tasks or will it stop the container and recover the task on a different worker node? I assumed the last, but I would like to be sure. - Will a decommissioned node still hold its physical data when being recommissioned? When is it removed? Does the removal occur at the first rebalancing when you initially decommission the node or will the data blocks still physically exist when you recommission the worker node? Many thanks to clarify this! ... View more

I am really puzzled by the following problem: INFO 2016-07-07 15:35:05,001 NetUtil.py:60 - Connecting to https://master2.localhost:8440/ca WARNING 2016-07-07 15:35:05,839 NetUtil.py:89 - Failed to connect to https://master2.localhost:8440/ca due to [Errno 113] No route to host WARNING 2016-07-07 15:35:05,840 NetUtil.py:112 - Server at https://master2.localhost:8440 is not reachable, sleeping for 10 seconds... ', None) Connection to master1.localhost closed. SSH command execution finished host=master1.localhost, exitcode=0 Command end time 2016-07-07 15:35:07 Registering with the server... Registration with the server failed. Does anybody know what is happening? I cannot see any issue with the Java version I am using... ... View more