| /** |
| * 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.regionserver.querymatcher; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.CellUtil; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.regionserver.ScanInfo; |
| |
| /** |
| * Query matcher for stripe compaction if range drop deletes is used. |
| */ |
| @InterfaceAudience.Private |
| public class StripeCompactionScanQueryMatcher extends DropDeletesCompactionScanQueryMatcher { |
| |
| private final byte[] dropDeletesFromRow; |
| |
| private final byte[] dropDeletesToRow; |
| |
| private enum DropDeletesInOutput { |
| BEFORE, IN, AFTER |
| } |
| |
| private DropDeletesInOutput dropDeletesInOutput = DropDeletesInOutput.BEFORE; |
| |
| public StripeCompactionScanQueryMatcher(ScanInfo scanInfo, DeleteTracker deletes, |
| long readPointToUse, long earliestPutTs, long oldestUnexpiredTS, long now, |
| byte[] dropDeletesFromRow, byte[] dropDeletesToRow) { |
| super(scanInfo, deletes, readPointToUse, earliestPutTs, oldestUnexpiredTS, now); |
| this.dropDeletesFromRow = dropDeletesFromRow; |
| this.dropDeletesToRow = dropDeletesToRow; |
| } |
| |
| @Override |
| public MatchCode match(Cell cell) throws IOException { |
| MatchCode returnCode = preCheck(cell); |
| if (returnCode != null) { |
| return returnCode; |
| } |
| long mvccVersion = cell.getSequenceId(); |
| if (CellUtil.isDelete(cell)) { |
| if (mvccVersion > maxReadPointToTrackVersions) { |
| return MatchCode.INCLUDE; |
| } |
| trackDelete(cell); |
| if (dropDeletesInOutput == DropDeletesInOutput.IN) { |
| // here we are running like major compaction |
| trackDelete(cell); |
| returnCode = tryDropDelete(cell); |
| if (returnCode != null) { |
| return returnCode; |
| } |
| } else { |
| return MatchCode.INCLUDE; |
| } |
| } else { |
| returnCode = checkDeleted(deletes, cell); |
| if (returnCode != null) { |
| return returnCode; |
| } |
| } |
| // Skip checking column since we do not remove column during compaction. |
| return columns.checkVersions(cell, cell.getTimestamp(), cell.getTypeByte(), |
| mvccVersion > maxReadPointToTrackVersions); |
| } |
| |
| private boolean entered() { |
| return dropDeletesFromRow.length == 0 || rowComparator.compareRows(currentRow, |
| dropDeletesFromRow, 0, dropDeletesFromRow.length) >= 0; |
| } |
| |
| private boolean left() { |
| return dropDeletesToRow.length > 0 |
| && rowComparator.compareRows(currentRow, dropDeletesToRow, 0, dropDeletesToRow.length) >= 0; |
| } |
| |
| @Override |
| protected void reset() { |
| super.reset(); |
| // Check if we are about to enter or leave the drop deletes range. |
| switch (dropDeletesInOutput) { |
| case BEFORE: |
| if (entered()) { |
| if (left()) { |
| // Already out of range, which means there are no rows within the range. |
| dropDeletesInOutput = DropDeletesInOutput.AFTER; |
| } else { |
| dropDeletesInOutput = DropDeletesInOutput.IN; |
| } |
| } |
| break; |
| case IN: |
| if (left()) { |
| dropDeletesInOutput = DropDeletesInOutput.AFTER; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| } |