[jira] [Created] (REEF-792) Find actual memory on the machine in ContainerManager,java

["Mariia Mykhailova (JIRA)" <ji...@apache.org>]

Mariia Mykhailova created REEF-792:
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             Summary: Find actual memory on the machine in ContainerManager,java
                 Key: REEF-792
                 URL: https://issues.apache.org/jira/browse/REEF-792
             Project: REEF
          Issue Type: Improvement
          Components: REEF Runtime Local
            Reporter: Mariia Mykhailova
            Priority: Minor


{{org/apache/reef/runtime/local/driver/ContainerManager.java}}
In {{sendNodeDescriptors}} method, try to get actual system memory on the machine before falling back to default value. 

It looks like this can only be determined via [an API that is only on the Oracle JDK|http://stackoverflow.com/questions/5512378/how-to-get-ram-size-and-size-of-hard-disk-using-java]. We could have a {{try}} block to do that and use {{this.defaultMemorySize}} in the catch



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