Uses of Interface
org.apache.giraph.master.MasterObserver

Packages that use MasterObserver

Package	Description
org.apache.giraph.conf	Package of Giraph configuration related things.
org.apache.giraph.master	Package of all the master related things.
org.apache.giraph.utils	Package of all generic utility classes.

Uses of MasterObserver in org.apache.giraph.conf

Fields in org.apache.giraph.conf with type parameters of type MasterObserver

Modifier and Type	Field and Description
static ClassConfOption<MasterObserver>	GiraphConstants.MASTER_OBSERVER_CLASSES Classes for Master Observer - optional

Methods in org.apache.giraph.conf that return MasterObserver

Modifier and Type	Method and Description
MasterObserver[]	ImmutableClassesGiraphConfiguration.createMasterObservers(org.apache.hadoop.mapreduce.Mapper.Context context) Create array of MasterObservers.

Method parameters in org.apache.giraph.conf with type arguments of type MasterObserver

Modifier and Type	Method and Description
void	GiraphConfiguration.addMasterObserverClass(Class<? extends MasterObserver> masterObserverClass) Add a MasterObserver class (optional)

Uses of MasterObserver in org.apache.giraph.master

Classes in org.apache.giraph.master that implement MasterObserver

Modifier and Type	Class and Description
class	DefaultMasterObserver A no-op implementation of MasterObserver to make it easier for users.

Uses of MasterObserver in org.apache.giraph.utils

Classes in org.apache.giraph.utils that implement MasterObserver

Modifier and Type	Class and Description
class	JMapHistoDumper An observer for both worker and master that periodically dumps the memory usage using jmap tool.
class	LogVersions Logs versions of Giraph dependencies on job start.
class	ReactiveJMapHistoDumper An observer for both worker and master that periodically checks if available memory on heap is below certain threshold, and if found to be the case dumps jmap -histo for the process