Benjamin Mahler created MESOS-1718:
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Summary: Command executor can overcommit the slave.
Key: MESOS-1718
URL: https://issues.apache.org/jira/browse/MESOS-1718
Project: Mesos
Issue Type: Bug
Components: slave
Reporter: Benjamin Mahler
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
{code: title=}
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());
...
}
{code}
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.
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