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https://issues.apache.org/jira/browse/YARN-9923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956995#comment-16956995
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Peter Bacsko edited comment on YARN-9923 at 10/22/19 12:16 PM:
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_"NONE (default): preserving the current behaviour [...]"_
Even the current behaviour can be improved. Right now there are multiple error
messages, one after the other. If the binary is missing, there's no need to
emit multiple lines. Simply say "Fatal error: /usr/bin/docker is missing" and
exit immediately.
was (Author: pbacsko):
_"NONE (default): preserving the current behaviour [...]"_
Even the current behaviour can be improved. Right now there are multiple error
messages, one after the another. If the binary is missing, there's no need to
emit multiple lines. Simply say "Fatal error: /usr/bin/docker is missing" and
exit immediately.
> Detect missing Docker binary or not running Docker daemon
> ---------------------------------------------------------
>
> Key: YARN-9923
> URL: https://issues.apache.org/jira/browse/YARN-9923
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager, yarn
> Affects Versions: 3.2.1
> Reporter: Adam Antal
> Assignee: Adam Antal
> Priority: Major
>
> Currently if a NodeManager is enabled to allocate Docker containers, but the
> specified binary (docker.binary in the container-executor.cfg) is missing the
> container allocation fails with the following error message:
> {noformat}
> Container launch fails
> Exit code: 29
> Exception message: Launch container failed
> Shell error output: sh: <docker binary path, /usr/bin/docker by default>: No
> such file or directory
> Could not inspect docker network to get type /usr/bin/docker network inspect
> host --format='{{.Driver}}'.
> Error constructing docker command, docker error code=-1, error
> message='Unknown error'
> {noformat}
> I suggest to add a property say "yarn.nodemanager.runtime.linux.docker.check"
> to have the following options:
> - STARTUP: setting this option the NodeManager would not start if Docker
> binaries are missing or the Docker daemon is not running (the exception is
> considered FATAL during startup)
> - RUNTIME: would give a more detailed/user-friendly exception in
> NodeManager's side (NM logs) if Docker binaries are missing or the daemon is
> not working. This would also prevent further Docker container allocation as
> long as the binaries do not exist and the docker daemon is not running.
> - NONE (default): preserving the current behaviour, throwing exception during
> container allocation, carrying on using the default retry procedure.
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