| /* |
| * 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.druid.server.coordinator.loading; |
| |
| import org.apache.druid.server.coordinator.stats.CoordinatorRunStats; |
| import org.apache.druid.timeline.DataSegment; |
| |
| import java.util.Set; |
| |
| /** |
| * Supports load queue management. |
| */ |
| @Deprecated |
| public interface LoadQueuePeon |
| { |
| void start(); |
| |
| void stop(); |
| |
| Set<DataSegment> getSegmentsToLoad(); |
| |
| Set<SegmentHolder> getSegmentsInQueue(); |
| |
| Set<DataSegment> getSegmentsToDrop(); |
| |
| Set<DataSegment> getTimedOutSegments(); |
| |
| void markSegmentToDrop(DataSegment segmentToLoad); |
| |
| void unmarkSegmentToDrop(DataSegment segmentToLoad); |
| |
| Set<DataSegment> getSegmentsMarkedToDrop(); |
| |
| void loadSegment(DataSegment segment, SegmentAction action, LoadPeonCallback callback); |
| |
| void dropSegment(DataSegment segment, LoadPeonCallback callback); |
| |
| long getSizeOfSegmentsToLoad(); |
| |
| CoordinatorRunStats getAndResetStats(); |
| |
| /** |
| * Tries to cancel the current operation queued for the given segment on this |
| * server, if any. A request that has already been sent to the server cannot |
| * be cancelled. |
| * |
| * @return true if the operation was successfully cancelled |
| */ |
| boolean cancelOperation(DataSegment segment); |
| |
| } |