@InterfaceAudience.Public

Package org.apache.hadoop.yarn.util

Interface Summary

Interface	Description
AsyncCallback<T>	Generic interface that can be used for calling back when a corresponding asynchronous operation completes.
Clock	A simple clock interface that gives you time.

Class Summary

Class	Description
AbstractLivelinessMonitor<O>	A simple liveliness monitor with which clients can register, trust the component to monitor liveliness, get a call-back on expiry and then finally unregister.
AdHocLogDumper
ApplicationClassLoader	Deprecated
Apps	YARN internal application-related utilities
AuxiliaryServiceHelper
BoundedAppender	A CharSequence appender that considers its BoundedAppender.limit as upper bound.
ConverterUtils	This class contains a set of utilities which help converting data structures from/to 'serializableFormat' to/from hadoop/nativejava data structures.
DockerClientConfigHandler	Commonly needed actions for handling the Docker client configurations.
FSDownload	Download a single URL to the local disk.
LinuxResourceCalculatorPlugin	Plugin to calculate resource information on Linux systems.
Log4jWarningErrorMetricsAppender
Log4jWarningErrorMetricsAppender.Element
LRUCacheHashMap<K,V>	LRU cache with a configurable maximum cache size and access order.
MonotonicClock	A monotonic clock from some arbitrary time base in the past, counting in milliseconds, and not affected by settimeofday or similar system clock changes.
ProcfsBasedProcessTree	A Proc file-system based ProcessTree.
RackResolver
ResourceCalculatorPlugin	Plugin to calculate resource information on the system.
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.
RMHAUtils
StringHelper	Common string manipulation helpers
SystemClock	Implementation of Clock that gives the current time from the system clock in milliseconds.
Times
TrackingUriPlugin	Plugin to derive a tracking URL from a YARN Application ID
UTCClock	Implementation of Clock that gives the current UTC time in milliseconds.
WindowsBasedProcessTree
WindowsResourceCalculatorPlugin
YarnVersionInfo	This class finds the package info for Yarn.