Re: Review Request 40759: Command executor can overcommit the slave

[Klaus Ma <kl...@gmail.com>]

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/40759/
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(Updated Dec. 11, 2015, 10:06 p.m.)


Review request for Ben Mahler, Guangya Liu, Artem Harutyunyan, Ian Downes, Joris Van Remoortere, Joseph Wu, and Vinod Kone.


Changes
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Ready for review after test passed


Summary (updated)
-----------------

Command executor can overcommit the slave


Bugs: MESOS-1718
    https://issues.apache.org/jira/browse/MESOS-1718


Repository: mesos


Description
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Currently we give a small amount of resources to the command executor, in addition to resources used by the command task: https://github.com/apache/mesos/blob/0.20.0-rc1/src/slave/slave.cpp#L2448

```
ExecutorInfo Slave::getExecutorInfo(
    const FrameworkID& frameworkId,
    const TaskInfo& task)
{
  ...
    // Add an allowance for the command executor. This does lead to a
    // small overcommit of resources.
    executor.mutable_resources()->MergeFrom(
        Resources::parse(
          "cpus:" + stringify(DEFAULT_EXECUTOR_CPUS) + ";" +
          "mem:" + stringify(DEFAULT_EXECUTOR_MEM.megabytes())).get());
  ...
}
```

This leads to an overcommit of the slave. Ideally, for command tasks we can "transfer" all of the task resources to the executor at the slave / isolation level.


Diffs (updated)
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  include/mesos/mesos.proto 8ca2130 
  src/launcher/executor.cpp 09e7de6 
  src/master/constants.hpp cc38dfc 
  src/master/master.hpp 9aa548a 
  src/master/master.cpp 0d14822 
  src/master/validation.cpp 6a43bce 
  src/slave/constants.hpp bcbb140 
  src/slave/slave.hpp b7586ce 
  src/slave/slave.cpp 9bd86e1 
  src/tests/containerizer/docker_containerizer_tests.cpp 3f199e6 
  src/tests/master_tests.cpp 865fa4a 
  src/tests/master_validation_tests.cpp fbf8fad 
  src/tests/monitor_tests.cpp a848d14 
  src/tests/reservation_endpoints_tests.cpp d5d2aa7 
  src/tests/slave_recovery_tests.cpp c0e4ff7 
  src/tests/slave_tests.cpp 4975bea 

Diff: https://reviews.apache.org/r/40759/diff/


Testing (updated)
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`make && make check` in OS


Thanks,

Klaus Ma