Sidharta Seethana created YARN-4266:
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Summary: Allow whitelisted users to disable user
re-mapping/squashing when launching docker containers
Key: YARN-4266
URL: https://issues.apache.org/jira/browse/YARN-4266
Project: Hadoop YARN
Issue Type: Sub-task
Reporter: Sidharta Seethana
Assignee: Sidharta Seethana
Docker provides a mechanism (the --user switch) that enables us to specify the
user the container processes should run as. We use this mechanism today when
launching docker containers . In non-secure mode, we run the docker container
based on `yarn.nodemanager.linux-container-executor.nonsecure-mode.local-user`
and in secure mode, as the submitting user. However, this mechanism breaks down
with a large number of 'pre-created' images which don't necessarily have the
users available within the image. We need a way in which we can allow a
pre-defined set of users to run containers based on existing images, without
using the --user switch.
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