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.client;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertSame;
022
023import java.io.IOException;
024import java.util.Arrays;
025import org.apache.hadoop.hbase.Cell;
026import org.apache.hadoop.hbase.KeyValue;
027import org.apache.hadoop.hbase.testclassification.ClientTests;
028import org.apache.hadoop.hbase.testclassification.SmallTests;
029import org.apache.hadoop.hbase.util.Bytes;
030import org.junit.jupiter.api.AfterEach;
031import org.junit.jupiter.api.BeforeEach;
032import org.junit.jupiter.api.Tag;
033import org.junit.jupiter.api.Test;
034
035@Tag(SmallTests.TAG)
036@Tag(ClientTests.TAG)
037public class TestCompleteResultScanResultCache {
038
039  private static byte[] CF = Bytes.toBytes("cf");
040
041  private static byte[] CQ1 = Bytes.toBytes("cq1");
042
043  private static byte[] CQ2 = Bytes.toBytes("cq2");
044
045  private static byte[] CQ3 = Bytes.toBytes("cq3");
046
047  private CompleteScanResultCache resultCache;
048
049  @BeforeEach
050  public void setUp() {
051    resultCache = new CompleteScanResultCache();
052  }
053
054  @AfterEach
055  public void tearDown() {
056    resultCache.clear();
057    resultCache = null;
058  }
059
060  private static Cell createCell(int key, byte[] cq) {
061    return new KeyValue(Bytes.toBytes(key), CF, cq, Bytes.toBytes(key));
062  }
063
064  @Test
065  public void testNoPartial() throws IOException {
066    assertSame(ScanResultCache.EMPTY_RESULT_ARRAY,
067      resultCache.addAndGet(ScanResultCache.EMPTY_RESULT_ARRAY, false));
068    assertSame(ScanResultCache.EMPTY_RESULT_ARRAY,
069      resultCache.addAndGet(ScanResultCache.EMPTY_RESULT_ARRAY, true));
070    int count = 10;
071    Result[] results = new Result[count];
072    for (int i = 0; i < count; i++) {
073      results[i] = Result.create(Arrays.asList(createCell(i, CQ1)));
074    }
075    assertSame(results, resultCache.addAndGet(results, false));
076  }
077
078  @Test
079  public void testCombine1() throws IOException {
080    Result previousResult = Result.create(Arrays.asList(createCell(0, CQ1)), null, false, true);
081    Result result1 = Result.create(Arrays.asList(createCell(1, CQ1)), null, false, true);
082    Result result2 = Result.create(Arrays.asList(createCell(1, CQ2)), null, false, true);
083    Result result3 = Result.create(Arrays.asList(createCell(1, CQ3)), null, false, true);
084    Result[] results = resultCache.addAndGet(new Result[] { previousResult, result1 }, false);
085    assertEquals(1, results.length);
086    assertSame(previousResult, results[0]);
087
088    assertEquals(0, resultCache.addAndGet(new Result[] { result2 }, false).length);
089    assertEquals(0, resultCache.addAndGet(new Result[] { result3 }, false).length);
090    assertEquals(0, resultCache.addAndGet(new Result[0], true).length);
091
092    results = resultCache.addAndGet(new Result[0], false);
093    assertEquals(1, results.length);
094    assertEquals(1, Bytes.toInt(results[0].getRow()));
095    assertEquals(3, results[0].rawCells().length);
096    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ1)));
097    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ2)));
098    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ3)));
099  }
100
101  @Test
102  public void testCombine2() throws IOException {
103    Result result1 = Result.create(Arrays.asList(createCell(1, CQ1)), null, false, true);
104    Result result2 = Result.create(Arrays.asList(createCell(1, CQ2)), null, false, true);
105    Result result3 = Result.create(Arrays.asList(createCell(1, CQ3)), null, false, true);
106    Result nextResult1 = Result.create(Arrays.asList(createCell(2, CQ1)), null, false, true);
107    Result nextToNextResult1 = Result.create(Arrays.asList(createCell(3, CQ2)), null, false, false);
108
109    assertEquals(0, resultCache.addAndGet(new Result[] { result1 }, false).length);
110    assertEquals(0, resultCache.addAndGet(new Result[] { result2 }, false).length);
111    assertEquals(0, resultCache.addAndGet(new Result[] { result3 }, false).length);
112
113    Result[] results = resultCache.addAndGet(new Result[] { nextResult1 }, false);
114    assertEquals(1, results.length);
115    assertEquals(1, Bytes.toInt(results[0].getRow()));
116    assertEquals(3, results[0].rawCells().length);
117    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ1)));
118    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ2)));
119    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ3)));
120
121    results = resultCache.addAndGet(new Result[] { nextToNextResult1 }, false);
122    assertEquals(2, results.length);
123    assertEquals(2, Bytes.toInt(results[0].getRow()));
124    assertEquals(1, results[0].rawCells().length);
125    assertEquals(2, Bytes.toInt(results[0].getValue(CF, CQ1)));
126    assertEquals(3, Bytes.toInt(results[1].getRow()));
127    assertEquals(1, results[1].rawCells().length);
128    assertEquals(3, Bytes.toInt(results[1].getValue(CF, CQ2)));
129  }
130
131  @Test
132  public void testCombine3() throws IOException {
133    Result result1 = Result.create(Arrays.asList(createCell(1, CQ1)), null, false, true);
134    Result result2 = Result.create(Arrays.asList(createCell(1, CQ2)), null, false, true);
135    Result nextResult1 = Result.create(Arrays.asList(createCell(2, CQ1)), null, false, false);
136    Result nextToNextResult1 = Result.create(Arrays.asList(createCell(3, CQ1)), null, false, true);
137
138    assertEquals(0, resultCache.addAndGet(new Result[] { result1 }, false).length);
139    assertEquals(0, resultCache.addAndGet(new Result[] { result2 }, false).length);
140
141    Result[] results =
142      resultCache.addAndGet(new Result[] { nextResult1, nextToNextResult1 }, false);
143    assertEquals(2, results.length);
144    assertEquals(1, Bytes.toInt(results[0].getRow()));
145    assertEquals(2, results[0].rawCells().length);
146    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ1)));
147    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ2)));
148    assertEquals(2, Bytes.toInt(results[1].getRow()));
149    assertEquals(1, results[1].rawCells().length);
150    assertEquals(2, Bytes.toInt(results[1].getValue(CF, CQ1)));
151
152    results = resultCache.addAndGet(new Result[0], false);
153    assertEquals(1, results.length);
154    assertEquals(3, Bytes.toInt(results[0].getRow()));
155    assertEquals(1, results[0].rawCells().length);
156    assertEquals(3, Bytes.toInt(results[0].getValue(CF, CQ1)));
157  }
158
159  @Test
160  public void testCombine4() throws IOException {
161    Result result1 = Result.create(Arrays.asList(createCell(1, CQ1)), null, false, true);
162    Result result2 = Result.create(Arrays.asList(createCell(1, CQ2)), null, false, false);
163    Result nextResult1 = Result.create(Arrays.asList(createCell(2, CQ1)), null, false, true);
164    Result nextResult2 = Result.create(Arrays.asList(createCell(2, CQ2)), null, false, false);
165
166    assertEquals(0, resultCache.addAndGet(new Result[] { result1 }, false).length);
167
168    Result[] results = resultCache.addAndGet(new Result[] { result2, nextResult1 }, false);
169    assertEquals(1, results.length);
170    assertEquals(1, Bytes.toInt(results[0].getRow()));
171    assertEquals(2, results[0].rawCells().length);
172    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ1)));
173    assertEquals(1, Bytes.toInt(results[0].getValue(CF, CQ2)));
174
175    results = resultCache.addAndGet(new Result[] { nextResult2 }, false);
176    assertEquals(1, results.length);
177    assertEquals(2, Bytes.toInt(results[0].getRow()));
178    assertEquals(2, results[0].rawCells().length);
179    assertEquals(2, Bytes.toInt(results[0].getValue(CF, CQ1)));
180    assertEquals(2, Bytes.toInt(results[0].getValue(CF, CQ2)));
181  }
182}