io.druid.indexing.overlord.WorkerTaskRunner Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package io.druid.indexing.overlord;
import com.google.common.base.Predicate;
import io.druid.indexing.common.task.Task;
import io.druid.indexing.overlord.config.WorkerTaskRunnerConfig;
import io.druid.indexing.worker.Worker;
import java.util.Collection;
public interface WorkerTaskRunner extends TaskRunner
{
/**
* List of known workers who can accept tasks
* @return A list of workers who can accept tasks for running
*/
Collection getWorkers();
/**
* Return a list of workers who can be reaped by autoscaling
* @return Workers which can be reaped by autoscaling
*/
Collection getLazyWorkers();
/**
* Check which workers can be marked as lazy
* @param isLazyWorker
* @param maxWorkers
* @return
*/
Collection markWorkersLazy(Predicate isLazyWorker, int maxWorkers);
WorkerTaskRunnerConfig getConfig();
Collection getPendingTaskPayloads();
}