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.querymatcher;
019
020import java.io.IOException;
021import org.apache.hadoop.hbase.Cell;
022import org.apache.hadoop.hbase.PrivateCellUtil;
023import org.apache.hadoop.hbase.regionserver.ScanInfo;
024import org.apache.yetus.audience.InterfaceAudience;
025
026/**
027 * Query matcher for minor compaction.
028 */
029@InterfaceAudience.Private
030public class MinorCompactionScanQueryMatcher extends CompactionScanQueryMatcher {
031
032  public MinorCompactionScanQueryMatcher(ScanInfo scanInfo, DeleteTracker deletes,
033    ColumnTracker columns, long readPointToUse, long oldestUnexpiredTS, long now) {
034    super(scanInfo, deletes, columns, readPointToUse, oldestUnexpiredTS, now);
035  }
036
037  @Override
038  public MatchCode match(Cell cell) throws IOException {
039    MatchCode returnCode = preCheck(cell);
040    if (returnCode != null) {
041      return returnCode;
042    }
043    long mvccVersion = cell.getSequenceId();
044    byte typeByte = cell.getTypeByte();
045    if (PrivateCellUtil.isDelete(typeByte)) {
046      if (mvccVersion > maxReadPointToTrackVersions) {
047        // we should not use this delete marker to mask any cell yet.
048        return MatchCode.INCLUDE;
049      }
050      trackDelete(cell);
051      return MatchCode.INCLUDE;
052    }
053    returnCode = checkDeleted(deletes, cell);
054    if (returnCode != null) {
055      return returnCode;
056    }
057    // Skip checking column since we do not remove column during compaction.
058    return columns.checkVersions(cell, cell.getTimestamp(), typeByte,
059      mvccVersion > maxReadPointToTrackVersions);
060  }
061}