/* * * 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); } }