| /** |
| * |
| * 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.hadoop.hbase.regionserver; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest; |
| import org.apache.hadoop.hbase.security.User; |
| import org.apache.hadoop.hbase.util.Pair; |
| |
| @InterfaceAudience.Private |
| public interface CompactionRequestor { |
| /** |
| * @param r Region to compact |
| * @param why Why compaction was requested -- used in debug messages |
| * @return The created {@link CompactionRequest CompactionRequests} or an empty list if no |
| * compactions were started |
| * @throws IOException |
| */ |
| List<CompactionRequest> requestCompaction(final Region r, final String why) |
| throws IOException; |
| |
| /** |
| * @param r Region to compact |
| * @param why Why compaction was requested -- used in debug messages |
| * @param requests custom compaction requests. Each compaction must specify the store on which it |
| * is acting. Can be <tt>null</tt> in which case a compaction will be attempted on all |
| * stores for the region. |
| * @return The created {@link CompactionRequest CompactionRequests} or an empty list if no |
| * compactions were started |
| * @throws IOException |
| */ |
| List<CompactionRequest> requestCompaction( |
| final Region r, final String why, List<Pair<CompactionRequest, Store>> requests |
| ) |
| throws IOException; |
| |
| /** |
| * @param r Region to compact |
| * @param s Store within region to compact |
| * @param why Why compaction was requested -- used in debug messages |
| * @param request custom compaction request for the {@link Region} and {@link Store}. Custom |
| * request must be <tt>null</tt> or be constructed with matching region and store. |
| * @return The created {@link CompactionRequest} or <tt>null</tt> if no compaction was started. |
| * @throws IOException |
| */ |
| CompactionRequest requestCompaction( |
| final Region r, final Store s, final String why, CompactionRequest request |
| ) throws IOException; |
| |
| /** |
| * @param r Region to compact |
| * @param why Why compaction was requested -- used in debug messages |
| * @param pri Priority of this compaction. minHeap. <=0 is critical |
| * @param requests custom compaction requests. Each compaction must specify the store on which it |
| * is acting. Can be <tt>null</tt> in which case a compaction will be attempted on all |
| * stores for the region. |
| * @param user the effective user |
| * @return The created {@link CompactionRequest CompactionRequests} or an empty list if no |
| * compactions were started. |
| * @throws IOException |
| */ |
| List<CompactionRequest> requestCompaction( |
| final Region r, final String why, int pri, List<Pair<CompactionRequest, Store>> requests, |
| User user |
| ) throws IOException; |
| |
| /** |
| * @param r Region to compact |
| * @param s Store within region to compact |
| * @param why Why compaction was requested -- used in debug messages |
| * @param pri Priority of this compaction. minHeap. <=0 is critical |
| * @param request custom compaction request to run. {@link Store} and {@link Region} for the |
| * request must match the region and store specified here. |
| * @param user |
| * @return The created {@link CompactionRequest} or <tt>null</tt> if no compaction was started |
| * @throws IOException |
| */ |
| CompactionRequest requestCompaction( |
| final Region r, final Store s, final String why, int pri, CompactionRequest request, User user |
| ) throws IOException; |
| } |