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From "Adrian Kalaszi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4263) Capacity scheduler 60%-40% formatting floating point issue
Date Wed, 14 Oct 2015 12:17:05 GMT
Adrian Kalaszi created YARN-4263:
------------------------------------

             Summary: Capacity scheduler 60%-40% formatting floating point issue
                 Key: YARN-4263
                 URL: https://issues.apache.org/jira/browse/YARN-4263
             Project: Hadoop YARN
          Issue Type: Bug
          Components: client
    Affects Versions: 2.7.1
            Reporter: Adrian Kalaszi
            Priority: Trivial


If capacity scheduler is set with two queues to 60% and 40% capacity, due to a java float
floating representation issue
{code}
> hadoop queue -list
======================
Queue Name : default 
Queue State : running 
Scheduling Info : Capacity: 40.0, MaximumCapacity: 100.0, CurrentCapacity: 0.0 
======================
Queue Name : large 
Queue State : running 
Scheduling Info : Capacity: 60.000004, MaximumCapacity: 100.0, CurrentCapacity: 0.0 
{code}
Because 
{code} System.err.println((0.6f) * 100); {code}
results in 60.000004.






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