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https://issues.apache.org/jira/browse/YARN-6442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Antal reassigned YARN-6442:
--------------------------------
Assignee: Siddharth Ahuja
> Inaccurate javadoc in NodeManagerHardwareUtils.getContainerMemoryMB
> -------------------------------------------------------------------
>
> Key: YARN-6442
> URL: https://issues.apache.org/jira/browse/YARN-6442
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Miklos Szegedi
> Assignee: Siddharth Ahuja
> Priority: Minor
> Labels: newbie
>
> NodeManagerHardwareUtils.getContainerMemoryMB has the following javadoc:
> {code}
> "If the OS has a
> * ResourceCalculatorPlugin implemented, the calculation is 0.8 * (RAM - 2 *
> * JVM-memory) i.e. use 80% of the memory after accounting for memory used
> by
> * the DataNode and the NodeManager. If the number is less than 1GB, log a
> * warning message."
> {code}
> I think the accurate expression is 0.8*(RAM-2*JVM)-systemreserved. I also do
> not see the 1GB cap in the code.
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