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.Assert.assertEquals; 021import static org.junit.Assert.assertFalse; 022import static org.junit.Assert.assertTrue; 023 024import java.util.List; 025import java.util.concurrent.ExecutionException; 026import java.util.stream.Collectors; 027import java.util.stream.IntStream; 028import org.apache.hadoop.hbase.HBaseClassTestRule; 029import org.apache.hadoop.hbase.HBaseTestingUtility; 030import org.apache.hadoop.hbase.TableName; 031import org.apache.hadoop.hbase.testclassification.ClientTests; 032import org.apache.hadoop.hbase.testclassification.MediumTests; 033import org.apache.hadoop.hbase.util.Bytes; 034import org.junit.AfterClass; 035import org.junit.BeforeClass; 036import org.junit.ClassRule; 037import org.junit.Test; 038import org.junit.experimental.categories.Category; 039 040/** 041 * With filter we may stop at a middle of row and think that we still have more cells for the 042 * current row but actually all the remaining cells will be filtered out by the filter. So it will 043 * lead to a Result that mayHaveMoreCellsInRow is true but actually there are no cells for the same 044 * row. Here we want to test if our limited scan still works. 045 */ 046@Category({ MediumTests.class, ClientTests.class }) 047public class TestRawAsyncTableLimitedScanWithFilter { 048 049 @ClassRule 050 public static final HBaseClassTestRule CLASS_RULE = 051 HBaseClassTestRule.forClass(TestRawAsyncTableLimitedScanWithFilter.class); 052 053 private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); 054 055 private static final TableName TABLE_NAME = TableName.valueOf("TestRegionScanner"); 056 057 private static final byte[] FAMILY = Bytes.toBytes("cf"); 058 059 private static final byte[][] CQS = 060 { Bytes.toBytes("cq1"), Bytes.toBytes("cq2"), Bytes.toBytes("cq3"), Bytes.toBytes("cq4") }; 061 062 private static int ROW_COUNT = 10; 063 064 private static AsyncConnection CONN; 065 066 private static AsyncTable<?> TABLE; 067 068 @BeforeClass 069 public static void setUp() throws Exception { 070 UTIL.startMiniCluster(1); 071 UTIL.createTable(TABLE_NAME, FAMILY); 072 CONN = ConnectionFactory.createAsyncConnection(UTIL.getConfiguration()).get(); 073 TABLE = CONN.getTable(TABLE_NAME); 074 TABLE.putAll(IntStream.range(0, ROW_COUNT).mapToObj(i -> { 075 Put put = new Put(Bytes.toBytes(i)); 076 IntStream.range(0, CQS.length) 077 .forEach(j -> put.addColumn(FAMILY, CQS[j], Bytes.toBytes((j + 1) * i))); 078 return put; 079 }).collect(Collectors.toList())).get(); 080 } 081 082 @AfterClass 083 public static void tearDown() throws Exception { 084 CONN.close(); 085 UTIL.shutdownMiniCluster(); 086 } 087 088 @Test 089 public void testCompleteResult() throws InterruptedException, ExecutionException { 090 int limit = 5; 091 Scan scan = 092 new Scan().setFilter(new ColumnCountOnRowFilter(2)).setMaxResultSize(1).setLimit(limit); 093 List<Result> results = TABLE.scanAll(scan).get(); 094 assertEquals(limit, results.size()); 095 IntStream.range(0, limit).forEach(i -> { 096 Result result = results.get(i); 097 assertEquals(i, Bytes.toInt(result.getRow())); 098 assertEquals(2, result.size()); 099 assertFalse(result.mayHaveMoreCellsInRow()); 100 assertEquals(i, Bytes.toInt(result.getValue(FAMILY, CQS[0]))); 101 assertEquals(2 * i, Bytes.toInt(result.getValue(FAMILY, CQS[1]))); 102 }); 103 } 104 105 @Test 106 public void testAllowPartial() throws InterruptedException, ExecutionException { 107 int limit = 5; 108 Scan scan = new Scan().setFilter(new ColumnCountOnRowFilter(2)).setMaxResultSize(1) 109 .setAllowPartialResults(true).setLimit(limit); 110 List<Result> results = TABLE.scanAll(scan).get(); 111 assertEquals(2 * limit, results.size()); 112 IntStream.range(0, 2 * limit).forEach(i -> { 113 int key = i / 2; 114 Result result = results.get(i); 115 assertEquals(key, Bytes.toInt(result.getRow())); 116 assertEquals(1, result.size()); 117 assertTrue(result.mayHaveMoreCellsInRow()); 118 int cqIndex = i % 2; 119 assertEquals(key * (cqIndex + 1), Bytes.toInt(result.getValue(FAMILY, CQS[cqIndex]))); 120 }); 121 } 122 123 @Test 124 public void testBatchAllowPartial() throws InterruptedException, ExecutionException { 125 int limit = 5; 126 Scan scan = new Scan().setFilter(new ColumnCountOnRowFilter(3)).setBatch(2).setMaxResultSize(1) 127 .setAllowPartialResults(true).setLimit(limit); 128 List<Result> results = TABLE.scanAll(scan).get(); 129 assertEquals(3 * limit, results.size()); 130 IntStream.range(0, 3 * limit).forEach(i -> { 131 int key = i / 3; 132 Result result = results.get(i); 133 assertEquals(key, Bytes.toInt(result.getRow())); 134 assertEquals(1, result.size()); 135 assertTrue(result.mayHaveMoreCellsInRow()); 136 int cqIndex = i % 3; 137 assertEquals(key * (cqIndex + 1), Bytes.toInt(result.getValue(FAMILY, CQS[cqIndex]))); 138 }); 139 } 140 141 @Test 142 public void testBatch() throws InterruptedException, ExecutionException { 143 int limit = 5; 144 Scan scan = new Scan().setFilter(new ColumnCountOnRowFilter(2)).setBatch(2).setMaxResultSize(1) 145 .setLimit(limit); 146 List<Result> results = TABLE.scanAll(scan).get(); 147 assertEquals(limit, results.size()); 148 IntStream.range(0, limit).forEach(i -> { 149 Result result = results.get(i); 150 assertEquals(i, Bytes.toInt(result.getRow())); 151 assertEquals(2, result.size()); 152 assertTrue(result.mayHaveMoreCellsInRow()); 153 assertEquals(i, Bytes.toInt(result.getValue(FAMILY, CQS[0]))); 154 assertEquals(2 * i, Bytes.toInt(result.getValue(FAMILY, CQS[1]))); 155 }); 156 } 157 158 @Test 159 public void testBatchAndFilterDiffer() throws InterruptedException, ExecutionException { 160 int limit = 5; 161 Scan scan = new Scan().setFilter(new ColumnCountOnRowFilter(3)).setBatch(2).setMaxResultSize(1) 162 .setLimit(limit); 163 List<Result> results = TABLE.scanAll(scan).get(); 164 assertEquals(2 * limit, results.size()); 165 IntStream.range(0, limit).forEach(i -> { 166 Result result = results.get(2 * i); 167 assertEquals(i, Bytes.toInt(result.getRow())); 168 assertEquals(2, result.size()); 169 assertTrue(result.mayHaveMoreCellsInRow()); 170 assertEquals(i, Bytes.toInt(result.getValue(FAMILY, CQS[0]))); 171 assertEquals(2 * i, Bytes.toInt(result.getValue(FAMILY, CQS[1]))); 172 result = results.get(2 * i + 1); 173 assertEquals(i, Bytes.toInt(result.getRow())); 174 assertEquals(1, result.size()); 175 assertFalse(result.mayHaveMoreCellsInRow()); 176 assertEquals(3 * i, Bytes.toInt(result.getValue(FAMILY, CQS[2]))); 177 }); 178 } 179}