001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import java.io.IOException;
021import org.apache.hadoop.hbase.executor.EventType;
022import org.apache.hadoop.hbase.procedure2.BaseRSProcedureCallable;
023import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;
024import org.apache.hadoop.hbase.util.Pair;
025import org.apache.hadoop.hbase.wal.AbstractWALRoller;
026import org.apache.yetus.audience.InterfaceAudience;
027import org.slf4j.Logger;
028import org.slf4j.LoggerFactory;
029
030import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
031import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.LogRollRemoteProcedureResult;
032
033@InterfaceAudience.Private
034public class LogRollCallable extends BaseRSProcedureCallable {
035
036  private static final Logger LOG = LoggerFactory.getLogger(LogRollCallable.class);
037
038  private int maxRollRetry;
039
040  @Override
041  protected byte[] doCall() throws Exception {
042    for (int nAttempt = 0; nAttempt < maxRollRetry; nAttempt++) {
043      try {
044        Pair<Long, Long> filenumPairBefore = getFilenumPair();
045
046        rs.getWalRoller().requestRollAll();
047        rs.getWalRoller().waitUntilWalRollFinished();
048
049        Pair<Long, Long> filenumPairAfter = getFilenumPair();
050        LOG.info(
051          "Before rolling log, highest filenum = {} default WAL filenum = {}, After "
052            + "rolling log, highest filenum = {} default WAL filenum = {}",
053          filenumPairBefore.getFirst(), filenumPairBefore.getSecond(), filenumPairAfter.getFirst(),
054          filenumPairAfter.getSecond());
055        return LogRollRemoteProcedureResult.newBuilder()
056          .setServerName(ProtobufUtil.toServerName(rs.getServerName()))
057          .setLastHighestWalFilenum(filenumPairBefore.getFirst()).build().toByteArray();
058      } catch (Exception e) {
059        LOG.warn("Failed rolling log on attempt={}", nAttempt, e);
060        if (nAttempt == maxRollRetry - 1) {
061          throw e;
062        }
063      }
064    }
065    return null;
066  }
067
068  private Pair<Long, Long> getFilenumPair() throws IOException {
069    long highestFilenum = rs.getWALs().stream()
070      .mapToLong(wal -> ((AbstractFSWAL<?>) wal).getFilenum()).max().orElse(-1L);
071    long defaultWALFilenum = ((AbstractFSWAL<?>) rs.getWAL(null)).getFilenum();
072    return Pair.newPair(highestFilenum, defaultWALFilenum);
073  }
074
075  @Override
076  protected void initParameter(byte[] parameter) throws Exception {
077    this.maxRollRetry = rs.getConfiguration().getInt(AbstractWALRoller.WAL_ROLL_RETRIES, 1);
078  }
079
080  @Override
081  public EventType getEventType() {
082    return EventType.RS_LOG_ROLL;
083  }
084}