| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.server.nodemanager | |
| org.apache.hadoop.yarn.server.nodemanager.health | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | LocalDirsHandlerServiceThe class which provides functionality of checking the health of the local
 directories of a node. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ExceptionReporterSimple  HealthReporterimplementation which reports whether a fatal
 exception has happened in the NodeManager. | 
| class  | NodeHealthCheckerServiceThis class provides functionality of checking the health of a node and
 reporting back to the service for which the health checker has been asked to
 report. | 
| class  | NodeHealthScriptRunnerThe class which provides functionality of checking the health of the node
 using the configured node health script and reporting back to the service
 for which the health checker has been asked to report. | 
| class  | TimedHealthReporterServiceA  HealthReporterskeleton for regularly checking a specificTimerTaskand obtaining information about it. | 
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