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From Anand Mazumdar <>
Subject Re: Review Request 52376: Created symlink from child container to task on the default executor.
Date Thu, 29 Sep 2016 05:53:08 GMT

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(Updated Sept. 29, 2016, 5:53 a.m.)

Review request for mesos and Vinod Kone.


Removed the boolean check guarding `mkdir()`

Bugs: MESOS-6272

Repository: mesos


We currently don't expose the mapping from the child `ContainerId`
to the `TaskID` of the task on the agent. This makes it very
difficult for the WebUI/other tools to construct the path to the
task sandbox. This change modifies the default executor to create
a symlink from '.tasks/taskId' to the 'containers/containerId'
folder thereby allowing these tools to look up the task sandbox
in the 'tasks' folder.

Diffs (updated)

  src/launcher/default_executor.cpp 129c16185a16c292e655403a55781c2c9c569e4f 
  src/tests/default_executor_tests.cpp 0f53fe72eb92f66edef5e9623ea28fa939e4c657 



Manual testing + make check (validated symlink is created)
ls -al /tmp/mesos_slave1/slaves/d53ae09b-e915-4108-9326-616b6f1de616-S2/frameworks/d53ae09b-e915-4108-9326-616b6f1de616-0003/executors/default-executor/runs/latest/.tasks
total 16
lrwxrwxrwx 1 faceoff faceoff  234 Sep 28 19:49 task1 -> /tmp/mesos_slave1/slaves/d53ae09b-e915-4108-9326-616b6f1de616-S2/frameworks/d53ae09b-e915-4108-9326-616b6f1de616-0003/executors/default-executor/runs/a9fc4117-f789-4798-b048-633d23923e55/containers/3b0169f2-a2b0-4631-a032-7f7dfee7a4ad
lrwxrwxrwx 1 faceoff faceoff  234 Sep 28 19:49 task2 -> /tmp/mesos_slave1/slaves/d53ae09b-e915-4108-9326-616b6f1de616-S2/frameworks/d53ae09b-e915-4108-9326-616b6f1de616-0003/executors/default-executor/runs/a9fc4117-f789-4798-b048-633d23923e55/containers/2878a965-3215-4a2e-85cf-0847b77f236f


Anand Mazumdar

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