Krishna Kishore Bonagiri created YARN-541:
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             Summary: getAllocatedContainers() is not returning all the 
allocated containers
                 Key: YARN-541
                 URL: https://issues.apache.org/jira/browse/YARN-541
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
    Affects Versions: 2.0.3-alpha
         Environment: Redhat Linux 64-bit
            Reporter: Krishna Kishore Bonagiri


I am running an application that was written and working well with the 
hadoop-2.0.0-alpha but when I am running the same against 2.0.3-alpha, the 
getAllocatedContainers() method called on AMResponse is not returning all the 
containers allocated sometimes. For example, I request for 10 containers and 
this method gives me only 9 containers sometimes, and when I looked at the log 
of Resource Manager, the 10th container is also allocated. It happens only 
sometimes randomly and works fine all other times. If I send one more request 
for the remaining container to RM after it failed to give them the first 
time(and before releasing already acquired ones), it could allocate that 
container. I am running only one application at a time, but 1000s of them one 
after another.

My main worry is, even though the RM's log is saying that all 10 requested 
containers are allocated,  the getAllocatedContainers() method is not returning 
me all of them, it returned only 9 surprisingly. I never saw this kind of issue 
in the previous version, i.e. hadoop-2.0.0-alpha.

Thanks,
Kishore

 

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