hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestPutDeleteEtcCellIteration.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.client;
  19
  20 import static org.junit.Assert.assertEquals;
  21 import static org.junit.Assert.assertTrue;
  22
  23 import java.io.IOException;
  24 import java.util.Arrays;
  25 import java.util.ConcurrentModificationException;
  26 import org.apache.hadoop.hbase.Cell;
  27 import org.apache.hadoop.hbase.CellScanner;
  28 import org.apache.hadoop.hbase.CellUtil;
  29 import org.apache.hadoop.hbase.HBaseClassTestRule;
  30 import org.apache.hadoop.hbase.KeyValue;
  31 import org.apache.hadoop.hbase.testclassification.ClientTests;
  32 import org.apache.hadoop.hbase.testclassification.SmallTests;
  33 import org.apache.hadoop.hbase.util.Bytes;
  34 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
  35 import org.junit.ClassRule;
  36 import org.junit.Test;
  37 import org.junit.experimental.categories.Category;
  38
  39 /**
  40  * Test that I can Iterate Client Actions that hold Cells (Get does not have Cells).
  41  */
  42 @Category({SmallTests.class, ClientTests.class})
  43 public class TestPutDeleteEtcCellIteration {
  44
  45   @ClassRule
  46   public static final HBaseClassTestRule CLASS_RULE =
  47       HBaseClassTestRule.forClass(TestPutDeleteEtcCellIteration.class);
  48
  49   private static final byte [] ROW = new byte [] {'r'};
  50   private static final long TIMESTAMP = EnvironmentEdgeManager.currentTime();
  51   private static final int COUNT = 10;
  52
  53   @Test
  54   public void testPutIteration() throws IOException {
  55     Put p = new Put(ROW);
  56     for (int i = 0; i < COUNT; i++) {
  57       byte [] bytes = Bytes.toBytes(i);
  58       p.addColumn(bytes, bytes, TIMESTAMP, bytes);
  59     }
  60     int index = 0;
  61     for (CellScanner cellScanner = p.cellScanner(); cellScanner.advance();) {
  62       Cell cell = cellScanner.current();
  63       byte [] bytes = Bytes.toBytes(index++);
  64       cell.equals(new KeyValue(ROW, bytes, bytes, TIMESTAMP, bytes));
  65     }
  66     assertEquals(COUNT, index);
  67   }
  68
  69   @Test (expected = ConcurrentModificationException.class)
  70   public void testPutConcurrentModificationOnIteration() throws IOException {
  71     Put p = new Put(ROW);
  72     for (int i = 0; i < COUNT; i++) {
  73       byte [] bytes = Bytes.toBytes(i);
  74       p.addColumn(bytes, bytes, TIMESTAMP, bytes);
  75     }
  76     int index = 0;
  77     int trigger = 3;
  78     for (CellScanner cellScanner = p.cellScanner(); cellScanner.advance();) {
  79       Cell cell = cellScanner.current();
  80       byte [] bytes = Bytes.toBytes(index++);
  81       // When we hit the trigger, try inserting a new KV; should trigger exception
  82       if (trigger == 3) p.addColumn(bytes, bytes, TIMESTAMP, bytes);
  83       cell.equals(new KeyValue(ROW, bytes, bytes, TIMESTAMP, bytes));
  84     }
  85     assertEquals(COUNT, index);
  86   }
  87
  88   @Test
  89   public void testDeleteIteration() throws IOException {
  90     Delete d = new Delete(ROW);
  91     for (int i = 0; i < COUNT; i++) {
  92       byte [] bytes = Bytes.toBytes(i);
  93       d.addColumn(bytes, bytes, TIMESTAMP);
  94     }
  95     int index = 0;
  96     for (CellScanner cellScanner = d.cellScanner(); cellScanner.advance();) {
  97       Cell cell = cellScanner.current();
  98       byte [] bytes = Bytes.toBytes(index++);
  99       cell.equals(new KeyValue(ROW, bytes, bytes, TIMESTAMP, KeyValue.Type.DeleteColumn));
 100     }
 101     assertEquals(COUNT, index);
 102   }
 103
 104   @Test
 105   public void testAppendIteration() throws IOException {
 106     Append a = new Append(ROW);
 107     for (int i = 0; i < COUNT; i++) {
 108       byte [] bytes = Bytes.toBytes(i);
 109       a.addColumn(bytes, bytes, bytes);
 110     }
 111     int index = 0;
 112     for (CellScanner cellScanner = a.cellScanner(); cellScanner.advance();) {
 113       Cell cell = cellScanner.current();
 114       byte [] bytes = Bytes.toBytes(index++);
 115       KeyValue kv = (KeyValue)cell;
 116       assertTrue(Bytes.equals(CellUtil.cloneFamily(kv), bytes));
 117       assertTrue(Bytes.equals(CellUtil.cloneValue(kv), bytes));
 118     }
 119     assertEquals(COUNT, index);
 120   }
 121
 122   @Test
 123   public void testIncrementIteration() throws IOException {
 124     Increment increment = new Increment(ROW);
 125     for (int i = 0; i < COUNT; i++) {
 126       byte [] bytes = Bytes.toBytes(i);
 127       increment.addColumn(bytes, bytes, i);
 128     }
 129     int index = 0;
 130     for (CellScanner cellScanner = increment.cellScanner(); cellScanner.advance();) {
 131       Cell cell = cellScanner.current();
 132       int value = index;
 133       byte [] bytes = Bytes.toBytes(index++);
 134       KeyValue kv = (KeyValue)cell;
 135       assertTrue(Bytes.equals(CellUtil.cloneFamily(kv), bytes));
 136       long a = Bytes.toLong(CellUtil.cloneValue(kv));
 137       assertEquals(value, a);
 138     }
 139     assertEquals(COUNT, index);
 140   }
 141
 142   @Test
 143   public void testResultIteration() throws IOException {
 144     Cell [] cells = new Cell[COUNT];
 145     for(int i = 0; i < COUNT; i++) {
 146       byte [] bytes = Bytes.toBytes(i);
 147       cells[i] = new KeyValue(ROW, bytes, bytes, TIMESTAMP, bytes);
 148     }
 149     Result r = Result.create(Arrays.asList(cells));
 150     int index = 0;
 151     for (CellScanner cellScanner = r.cellScanner(); cellScanner.advance();) {
 152       Cell cell = cellScanner.current();
 153       byte [] bytes = Bytes.toBytes(index++);
 154       cell.equals(new KeyValue(ROW, bytes, bytes, TIMESTAMP, bytes));
 155     }
 156     assertEquals(COUNT, index);
 157   }
 158 }