hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionMove.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.regionserver;
  19
  20 import static junit.framework.TestCase.fail;
  21 import static org.junit.Assert.assertTrue;
  22
  23 import java.io.IOException;
  24 import java.util.List;
  25 import java.util.stream.Collectors;
  26 import org.apache.hadoop.conf.Configuration;
  27 import org.apache.hadoop.hbase.DoNotRetryIOException;
  28 import org.apache.hadoop.hbase.HBaseClassTestRule;
  29 import org.apache.hadoop.hbase.HBaseTestingUtil;
  30 import org.apache.hadoop.hbase.TableName;
  31 import org.apache.hadoop.hbase.client.Admin;
  32 import org.apache.hadoop.hbase.client.DoNotRetryRegionException;
  33 import org.apache.hadoop.hbase.client.Put;
  34 import org.apache.hadoop.hbase.client.RegionInfo;
  35 import org.apache.hadoop.hbase.client.Table;
  36 import org.apache.hadoop.hbase.testclassification.MediumTests;
  37 import org.apache.hadoop.hbase.util.Bytes;
  38 import org.junit.AfterClass;
  39 import org.junit.Before;
  40 import org.junit.BeforeClass;
  41 import org.junit.ClassRule;
  42 import org.junit.Rule;
  43 import org.junit.Test;
  44 import org.junit.experimental.categories.Category;
  45 import org.junit.rules.ExpectedException;
  46 import org.junit.rules.TestName;
  47
  48 /**
  49  * Test move fails when table disabled
  50  */
  51 @Category({MediumTests.class})
  52 public class TestRegionMove {
  53
  54   @ClassRule
  55   public static final HBaseClassTestRule CLASS_RULE =
  56       HBaseClassTestRule.forClass(TestRegionMove.class);
  57
  58   @Rule
  59   public ExpectedException thrown = ExpectedException.none();
  60
  61   @Rule
  62   public TestName name = new TestName();
  63   private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();
  64   public static Configuration CONF ;
  65   protected static final String F1 = "f1";
  66
  67   // Test names
  68   protected TableName tableName;
  69   protected String method;
  70
  71   @BeforeClass
  72   public static void startCluster() throws Exception {
  73     TEST_UTIL.startMiniCluster(2);
  74   }
  75
  76   @AfterClass
  77   public static void stopCluster() throws Exception {
  78     TEST_UTIL.shutdownMiniCluster();
  79   }
  80
  81   @Before
  82   public void setup() throws IOException {
  83     CONF = TEST_UTIL.getConfiguration();
  84     method = name.getMethodName();
  85     tableName = TableName.valueOf(method);
  86   }
  87
  88   @Test
  89   public void testDisableAndMove() throws Exception {
  90     Admin admin = TEST_UTIL.getAdmin();
  91
  92     // Create a table with more than one region
  93     Table t = TEST_UTIL.createMultiRegionTable(tableName, Bytes.toBytes(F1), 10);
  94     TEST_UTIL.waitUntilAllRegionsAssigned(tableName);
  95
  96     // Write an update to each region
  97     for (RegionInfo regionInfo : admin.getRegions(tableName)) {
  98       byte[] startKey = regionInfo.getStartKey();
  99       // The startKey of the first region is "empty", which would throw an error if we try to
 100       // Put that.
 101       byte[] rowKey = org.apache.hbase.thirdparty.com.google.common.primitives.Bytes.concat(
 102           startKey, Bytes.toBytes("1"));
 103       Put p = new Put(rowKey);
 104       p.addColumn(Bytes.toBytes(F1), Bytes.toBytes("q1"), Bytes.toBytes("value"));
 105       t.put(p);
 106     }
 107
 108     // Get a Region which is on the first RS
 109     HRegionServer rs1 = TEST_UTIL.getRSForFirstRegionInTable(tableName);
 110     HRegionServer rs2 = TEST_UTIL.getOtherRegionServer(rs1);
 111     List<RegionInfo> regionsOnRS1ForTable = admin.getRegions(rs1.getServerName()).stream()
 112         .filter((regionInfo) -> regionInfo.getTable().equals(tableName))
 113         .collect(Collectors.toList());
 114     assertTrue(
 115         "Expected to find at least one region for " + tableName + " on " + rs1.getServerName()
 116         + ", but found none", !regionsOnRS1ForTable.isEmpty());
 117     final RegionInfo regionToMove = regionsOnRS1ForTable.get(0);
 118
 119     // Offline the region and then try to move it. Should fail.
 120     admin.unassign(regionToMove.getRegionName(), true);
 121     try {
 122       admin.move(regionToMove.getEncodedNameAsBytes(), rs2.getServerName());
 123       fail();
 124     } catch (DoNotRetryRegionException e) {
 125       // We got expected exception
 126     }
 127     // Reassign for next stage of test.
 128     admin.assign(regionToMove.getRegionName());
 129
 130     // Disable the table
 131     admin.disableTable(tableName);
 132
 133     try {
 134       // Move the region to the other RS -- should fail
 135       admin.move(regionToMove.getEncodedNameAsBytes(), rs2.getServerName());
 136       fail();
 137     } catch (DoNotRetryIOException e) {
 138       // We got expected exception
 139     }
 140   }
 141 }