Yan Xu created MESOS-5119:
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Summary: Support directory structure in CommandInfo.URI.filename
in fetcher
Key: MESOS-5119
URL: https://issues.apache.org/jira/browse/MESOS-5119
Project: Mesos
Issue Type: Improvement
Components: fetcher
Reporter: Yan Xu
In MESOS-4735, {{CommandInfo.URI.filename}} is added but there is no validation
to make sure it's a simple basename, so people can actually specify the
filename to be something like {{path/to/file}} but the validation [won't catch
it|https://reviews.apache.org/r/45046/#comment190155]. The fetch will fail
later in {{download()}} because it cannot open a destination file without its
parent directory.
Instead of fixing this by disallowing such output filename, we could actually
support this behavior. There are use cases where multiple fetch targets have
the same basename but they are organized by a directory hierarchy.
{noformat:title=}
root/app.dat
root/parent/app.dat
root/parent/child/app.dat
{noformat}
It looks to me that supporting this is straightforward and we just need to 1)
make sure the output path is within the sandbox and 2) recursively mkdirs for
the parent dirs.
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