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https://issues.apache.org/jira/browse/MESOS-5384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15620335#comment-15620335
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Kris Paprocki commented on MESOS-5384:
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Hi Benjamin and John,
thanks for the comments.
I very much support the idea of not breaking backwards compatibility. However,
just adding an error message at fetch/parse level is not going to work due to
flags which contain directory path in format /path/to/directory (i.e.
launcher_dir).
There is a potential solution to that: flags with directory paths could be a
type of Path (from <stout/path.hpp>), currently these flags are type of
std::string.
Then, as flags::fetch is specialized for Path type, we could add the error
message in generic flags::fetch when he finds '/' at the beginning of the
string. But I'm not sure if there are any other cases in which flags may
contain '/' at the beginning. Do you see any blocker for this approach?
Going for this solution would involve a number of other changes in order to
adapt existing code to Path type instead of std::string (for these flags which
are directory paths). I'm willing to do the changes, but then maybe this shall
be a part of a new ticket?
As for this ticket, I could adapt the documentation. We could then later update
this ticket when the proper solution is applied.
> Improve error message for missing resources file
> ------------------------------------------------
>
> Key: MESOS-5384
> URL: https://issues.apache.org/jira/browse/MESOS-5384
> Project: Mesos
> Issue Type: Bug
> Components: general
> Affects Versions: 0.28.1
> Environment: Centos 7
> Reporter: John Yost
> Assignee: Kris Paprocki
> Priority: Minor
> Labels: easyfix, newbie
>
> Attempting to specify resources file via
> --resources=/etc/mesos-slave/small-slave-config.json threw the following
> error:
> Failed to determine slave resources: Bad value for resources, missing or
> extra ':' in /etc/mesos-slave/small-slave-config.json
> I confirmed I had valid JSON:
> [
> {
> "name": "cpus",
> "type": "SCALAR",
> "scalar": {
> "value": 0.5
> }
> },
> {
> "name": "mem",
> "type": "SCALAR",
> "scalar": {
> "value": 512
> }
> }
> ]
> In actuality, I misread to docs with my file pattern. Once I changed to
> resources=file:///etc/mesos-slave/small-slave-config.json the mesos slave
> started up fine. Just need a missing file check and corresponding error
> message to fix this.
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