authentication disabled; ui acls disabled; users with view permissions

[#1]

Hi can you help me on this, I'm trying to write data on hdfs using pyspark

I'm using cdh-6.3.1, it is a single node 
32GB RAM
45 GB storage
8 core CPU. 

I'm getting this exception, the directory is creating in hdfs location but data not loading.
this is my log

INFO SecurityManager
SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(spark); groups with view permissions: Set(); users with modify permissions: Set(spark); groups with modify permissions: Set()

NFO FsHistoryProvider
History server ui acls disabled; users with admin permissions: groups with admin permissions

Thanks 
Prasanna

[#2]

Hi I'm getting this exception please help me 

WARN cluster.YarnScheduler: Initial job has not accepted any resources; check your cluster UI to ensure that workers are registered and have sufficient resources

Thanks

Prasanna

[#3]

@prasanna06 

Your problem resembles this one  check your cluster UI to ensure that workers are registered and have sufficient resources

 Happy hadooping