| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.util | 
| Class and Description | 
|---|
| BoundedAppender A  CharSequenceappender that considers itsBoundedAppender.limitas upper
 bound. | 
| Clock A simple clock interface that gives you time. | 
| ResourceCalculatorProcessTree Interface class to obtain process resource usage
 NOTE: This class should not be used by external users, but only by external
 developers to extend and include their own process-tree implementation, 
 especially for platforms other than Linux and Windows. | 
| SystemClock Implementation of  Clockthat gives the current time from the system
 clock in milliseconds. | 
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