Basically, when I start up hadoop with the ./start-all.sh command I run into some problems.
I have looked at Hadoop cluster setup - java.net.ConnectException: Connection refused
and There are 0 datanode(s) running and no node(s) are excluded in this operation
When I run ./start-all.sh, I get
WARNING: Attempting to start all Apache Hadoop daemons as snagaraj in 10
seconds.
WARNING: This is not a recommended production deployment configuration.
WARNING: Use CTRL-C to abort.
Starting namenodes on [localhost]
pdsh@greg: localhost: ssh exited with exit code 1
Starting datanodes
Starting secondary namenodes [greg.bcmdc.bcm.edu]
Starting resourcemanager
Starting nodemanagers
When I run a python script that uses Hadoop/hdfs I get the error
org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
/user/data/...._COPYING_ could only be written to 0 of the
1 minReplication nodes. There are 0 datanode(s) running and 0 node(s)
are excluded in this operation.
I have tried reformatting the namenode with hdfs namenode -format, but that does not help.
The configurations on my xml files seem to be right and my path to JAVA_HOME is correct. I am happy to provide information as needed.
