io.druid.indexing.overlord.setup

Interface WorkerSelectStrategy

All Known Implementing Classes:

EqualDistributionWorkerSelectStrategy, FillCapacityWithAffinityWorkerSelectStrategy, FillCapacityWorkerSelectStrategy, JavaScriptWorkerSelectStrategy

public interface WorkerSelectStrategy

The RemoteTaskRunner uses this class to select a worker to assign tasks to.

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<ImmutableWorkerInfo>	findWorkerForTask(WorkerTaskRunnerConfig config, com.google.common.collect.ImmutableMap<String,ImmutableWorkerInfo> zkWorkers, Task task) Customizable logic for selecting a worker to run a task.

Method Detail

findWorkerForTask

com.google.common.base.Optional<ImmutableWorkerInfo> findWorkerForTask(WorkerTaskRunnerConfig config,
                                                                       com.google.common.collect.ImmutableMap<String,ImmutableWorkerInfo> zkWorkers,
                                                                       Task task)

Customizable logic for selecting a worker to run a task.

Parameters:

config - A config for running remote tasks

zkWorkers - An immutable map of workers to choose from.

task - The task to assign.

Returns:

A ImmutableWorkerInfo to run the task if one is available.