JobProxy interface with the default, cluster-agnostic,
 implementations.Servlet to the server at the specified path.ConfigFactory to read the job configs.JobProxyFactory class to produce
 JobProxy instances.TaskProxyFactory class to produce
 TaskProxy instances.LocalStoreMonitor.Job for all the jobs installed on this host.Job for the job instance specified by jobName and jobId if
 it is installed on this host.JobProxy and initializes it with the specified config.Job in the provided Collection.JobInstance
 param, transforms it to a list of Task and returns it.Task for the job instance specified by jobName and jobId.JobProxy,
 depending on the implementation.JobProxy from the
 JobProxyFactory class specified in the configuration.JobsResource endpoint.LocalStoreMonitor.LocalStoreMonitor using provided config.LocalStoreMonitor.Monitor implementations.Monitor using provided config.Application model.SamzaRestService.TaskProxy interface implementation for samza jobs running in yarn execution environment.TaskProxy instances.AbstractJobProxy with some script support functionality.InstallationFinder.ScriptJobProxy with methods specific to simple Samza deployments.TaskProxy
 instances.TasksResource endpoint.TaskProxy from the
 TaskProxyFactory class specified in the configuration.JobStatusProvider that retrieves
 the job status from the YARN command line interface.