Elek, Marton created HADOOP-16312:
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             Summary: Remove dumb-init from hadoop-runner image
                 Key: HADOOP-16312
                 URL: https://issues.apache.org/jira/browse/HADOOP-16312
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: Elek, Marton


This issue is reported by [~eyang] in HDDS-1495.

I think it's better to discuss under a separated issue as it's unrelated to 
HDDS-1495.

The original problem description from [~eyang]
{quote}Dumb-init  is one way to always run contaized program in the background 
and respawn the program when program fails. This is poor man’s solution for 
keeping program alive.


Cluster management software like Kubernetes or YARN have additional policy and 
logic to start the same docker container on a different node. Therefore, 
Dumb-init is not recommended for future Hadoop daemons instead allow cluster 
management software to make decision where to start the container. Dumb-init 
for demonize docker container will be removed, and change to use entrypoint.sh 
Docker provides -d flag to demonize foreground process. Most of the management 
system built on top of Docker, (ie. Kitematic, Apache YARN, and Kubernetes) 
integrates with Docker container at foreground to  aggregate stdout and stderr 
output of the containerized program.
{quote}



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