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https://issues.apache.org/jira/browse/MESOS-2738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bernd Mathiske updated MESOS-2738:
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Description:
[~rcorral] recently observed that according to the master's and the slave's
state.json summing up the resources allocated to tasks from different
frameworks on a slave does not always match the total that is reported for the
slave. The latter number is sometimes higher.
It would be desirable for tools that display allocation statistics to find
balanced tallies.
was:
[~rcorral] recently observed that according to state.json summing up the
resources allocated to tasks from different frameworks on a slave does not
match the total that is reported for the slave. The latter number is higher.
[~adam-mesos] and I have the strong suspicion that when in state.json the sum
of all resources allocated to a framework is reported, this does not include
the resources for default (command line) executors. However, when the resources
of a slave are summed up in state.json, these resources are included in the
total. Custom executor resources are included in both cases. Browsing master
source code supports this theory.
It would be desirable for tools that display allocation statistics to find
balanced tallies.
Possible alternative approaches:
- Exclude default executors from the sum for slaves.
- Include default executors for frameworks and their tasks.
- Emit a global record listing the canonical resource values for default
executors, which are always the same. Then the sums of such resources can be
determined by multiplying by the number of tasks involved.
Workaround for now: determine the latter amounts by reading Mesos source code
and hardcode them into your external tool.
> Report resources allocated to default executors equally for frameworks and
> slaves in state.json
> -----------------------------------------------------------------------------------------------
>
> Key: MESOS-2738
> URL: https://issues.apache.org/jira/browse/MESOS-2738
> Project: Mesos
> Issue Type: Improvement
> Components: json api, master
> Reporter: Bernd Mathiske
> Labels: mesosphere
>
> [~rcorral] recently observed that according to the master's and the slave's
> state.json summing up the resources allocated to tasks from different
> frameworks on a slave does not always match the total that is reported for
> the slave. The latter number is sometimes higher.
> It would be desirable for tools that display allocation statistics to find
> balanced tallies.
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