I am unable to restart Hue in AWS EMR Hadoop cluster. I have modified hue.ini file and wanted to restart hue for the changes to apply.When I ran "service hue restart", It is giving "command not found" error. I can understand that this must be because hue is not added to the environment path. However, when I run bin/hue, it doesn't take restart as an input. Is there a way to restart hue?
I am using Hue 3.7.1-amzn-7, emr-4.8.4 and Amazon 2.7.3 Hadoop distribution.
Thanks in Advance.
The restart process depends on the EMR AMI version you are using.
On EMR 4.x.x & 5.x.x AMI's ,
Service management is handled by upstart, and not the traditional SysVInit scripts. So, the error like "Command not found" is expected. Services can be queried using the upstart commands found in upstart cookbook
List of services on EMR:
grep -ir "env DAEMON=" /etc/init/ | cut -d"\"" -f2
hadoop-yarn-resourcemanager
oozie
hadoop-hdfs-namenode
hive-hcatalog-server
hadoop-mapreduce-historyserver
hue
hadoop-kms
hadoop-yarn-proxyserver
hadoop-httpfs
hive-server2
hadoop-yarn-timelineserver
Example commands to stop/start hue:
status hue
sudo stop hue
sudo start hue
sudo reload hue
On EMR 3.x.x AMI's ,the SysVInit commands that you are trying to use service hue restart might work.