content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF 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 org.apache.asterix.common.api;
  
  import java.util.Set;
  
  import org.apache.hyracks.api.application.IClusterLifecycleListener;
  import org.apache.hyracks.api.dataflow.IOperatorDescriptor;
  import org.apache.hyracks.api.job.IJobLifecycleListener;
  import org.apache.hyracks.api.job.JobId;
  import org.apache.hyracks.api.job.JobSpecification;
  
  public interface INodeJobTracker extends IJobLifecycleListener, IClusterLifecycleListener {
  
      /**
       * Gets node {@code nodeId} pending jobs. If the node is not active,
       * an empty set is returned.
       *
       * @param nodeId
       * @return unmodifiable set of the node pending jobs.
       */
      Set<JobId> getPendingJobs(String nodeId);
  
      /**
       * Gets the set of nodes that will participate in the execution
       * of the job. The nodes will include only nodes that are known
       * to this {@link INodeJobTracker}
       *
       * @param spec
       * @return The participating nodes in the job execution
       */
      Set<String> getJobParticipatingNodes(JobSpecification spec, Class<? extends IOperatorDescriptor> operatorClass);
  
      int getNumParticipatingPartitions(JobSpecification spec, Class<? extends IOperatorDescriptor> operatorClass);
  
  }
  