@Private @Unstable

Package org.apache.hadoop.tools.dynamometer.workloadgenerator

This contains the tooling necessary to generate a realistic workload, for example collected from audit logs, against a Dynamometer-simulated NameNode.

Class Summary

Class	Description
CreateFileMapper	CreateFileMapper continuously creates 1 byte files for the specified duration to increase the number of file objects on the NN.
VirtualInputFormat<K,V>	An input format which does not read any input, but rather starts a configurable number of mappers and runs them for a configurable duration.
VirtualInputSplit	A fake input split.
VirtualRecordReader<K,V>	A simple fake record reader which simply runs for some time duration.
WorkloadDriver	This is the driver for generating generic workloads against a NameNode under test.
WorkloadMapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT>	Represents the base class for a generic workload-generating mapper.

Enum Summary

Enum	Description
CreateFileMapper.CREATEFILECOUNTERS	Custom Counter definitions.