Miklos Szegedi created YARN-6442:
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Summary: 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
Priority: Minor
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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