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;
021
022import org.apache.hadoop.hbase.Cell;
023import org.apache.hadoop.hbase.CellUtil;
024import org.apache.hadoop.hbase.PrivateCellUtil;
025import org.apache.yetus.audience.InterfaceAudience;
026import org.apache.hadoop.hbase.regionserver.ScanInfo;
027
028/**
029 * Query matcher for minor compaction.
030 */
031@InterfaceAudience.Private
032public class MinorCompactionScanQueryMatcher extends CompactionScanQueryMatcher {
033
034  public MinorCompactionScanQueryMatcher(ScanInfo scanInfo, DeleteTracker deletes,
035      ColumnTracker columns, long readPointToUse, long oldestUnexpiredTS, long now) {
036    super(scanInfo, deletes, columns, readPointToUse, oldestUnexpiredTS, now);
037  }
038
039  @Override
040  public MatchCode match(Cell cell) throws IOException {
041    MatchCode returnCode = preCheck(cell);
042    if (returnCode != null) {
043      return returnCode;
044    }
045    long mvccVersion = cell.getSequenceId();
046    byte typeByte = cell.getTypeByte();
047    if (PrivateCellUtil.isDelete(typeByte)) {
048      if (mvccVersion > maxReadPointToTrackVersions) {
049        // we should not use this delete marker to mask any cell yet.
050        return MatchCode.INCLUDE;
051      }
052      trackDelete(cell);
053      return MatchCode.INCLUDE;
054    }
055    returnCode = checkDeleted(deletes, cell);
056    if (returnCode != null) {
057      return returnCode;
058    }
059    // Skip checking column since we do not remove column during compaction.
060    return columns.checkVersions(cell, cell.getTimestamp(), typeByte,
061      mvccVersion > maxReadPointToTrackVersions);
062  }
063}