| /* |
| * |
| * 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.replication.regionserver; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Optional; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.coprocessor.CoreCoprocessor; |
| import org.apache.hadoop.hbase.coprocessor.HasRegionServerServices; |
| import org.apache.hadoop.hbase.coprocessor.ObserverContext; |
| import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor; |
| import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment; |
| import org.apache.hadoop.hbase.coprocessor.RegionObserver; |
| import org.apache.hadoop.hbase.regionserver.HRegionServer; |
| import org.apache.hadoop.hbase.regionserver.RegionServerServices; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * An Observer to add HFile References to replication queue. |
| */ |
| @CoreCoprocessor |
| @InterfaceAudience.Private |
| public class ReplicationObserver implements RegionCoprocessor, RegionObserver { |
| private static final Logger LOG = LoggerFactory.getLogger(ReplicationObserver.class); |
| |
| @Override |
| public Optional<RegionObserver> getRegionObserver() { |
| return Optional.of(this); |
| } |
| |
| @Override |
| @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="NP_NULL_ON_SOME_PATH", |
| justification="NPE should never happen; if it does it is a bigger issue") |
| public void preCommitStoreFile(final ObserverContext<RegionCoprocessorEnvironment> ctx, |
| final byte[] family, final List<Pair<Path, Path>> pairs) throws IOException { |
| RegionCoprocessorEnvironment env = ctx.getEnvironment(); |
| Configuration c = env.getConfiguration(); |
| if (pairs == null || pairs.isEmpty() || |
| !c.getBoolean(HConstants.REPLICATION_BULKLOAD_ENABLE_KEY, |
| HConstants.REPLICATION_BULKLOAD_ENABLE_DEFAULT)) { |
| LOG.debug("Skipping recording bulk load entries in preCommitStoreFile for bulkloaded " |
| + "data replication."); |
| return; |
| } |
| // This is completely cheating AND getting a HRegionServer from a RegionServerEnvironment is |
| // just going to break. This is all private. Not allowed. Regions shouldn't assume they are |
| // hosted in a RegionServer. TODO: fix. |
| RegionServerServices rss = ((HasRegionServerServices)env).getRegionServerServices(); |
| Replication rep = (Replication)((HRegionServer)rss).getReplicationSourceService(); |
| rep.addHFileRefsToQueue(env.getRegionInfo().getTable(), family, pairs); |
| } |
| } |