I was having same issue and was getting same error but when I was running any command through directory where I have installed CDH, I was able to run all the commands - hadoop, hdfs, spark-shell ect.   e.g. if your CHD installation location is - /dat/anlt1/cld/cloudera/CDH-5.8.3-1.cdh5.8.3.p0.2/bin   you can test -   $ cd /dat/anlt1/cld/cloudera/CDH-5.8.3-1.cdh5.8.3.p0.2/bin   [root@xyz bin]# ./hadoop and if it work then you need to set up environment variable in your Unix master server   For RHEL -   [root@xyz~]# echo "$PATH" /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin   [root@xyz~]# export PATH=$PATH:/path/to/CHD_Installation_bin_path   for me it's - /dat/anlt1/cld/cloudera/CDH-5.8.3-1.cdh5.8.3.p0.2/bin   [root@xyz~]# echo "$PATH"   /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/dat/anlt1/cld/cloudera/CDH-5.8.3-1.cdh5.8.3.p0.2/bin   to make permanent change -   $ echo "export PATH=$PATH:/dat/anlt1/cld/cloudera/CDH-5.8.3-1.cdh5.8.3.p0.2/bin" >> /etc/profile   after that restart(reboot) your server. ... View more

If you use CM you don't need to use the Hue safety valve. Make sure the Trift Server is added and started Make sure in the Hue configuration that the HBase service and the HBase thrift service are checked Restart Hue and that's it! Romain ... View more