| /** |
| * 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.client; |
| |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.testclassification.ClientTests; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({MediumTests.class, ClientTests.class}) |
| public class TestRegionLocationCaching { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionLocationCaching.class); |
| |
| private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| private static int SLAVES = 1; |
| private static TableName TABLE_NAME = TableName.valueOf("TestRegionLocationCaching"); |
| private static byte[] FAMILY = Bytes.toBytes("testFamily"); |
| private static byte[] QUALIFIER = Bytes.toBytes("testQualifier"); |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| TEST_UTIL.startMiniCluster(SLAVES); |
| TEST_UTIL.createTable(TABLE_NAME, new byte[][] { FAMILY }); |
| TEST_UTIL.waitUntilAllRegionsAssigned(TABLE_NAME); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @Test |
| public void testCachingForHTableSinglePut() throws Exception { |
| byte[] row = Bytes.toBytes("htable_single_put"); |
| byte[] value = Bytes.toBytes("value"); |
| |
| Put put = new Put(row); |
| put.addColumn(FAMILY, QUALIFIER, value); |
| |
| try (Table table = TEST_UTIL.getConnection().getTable(TABLE_NAME)) { |
| table.put(put); |
| } |
| |
| checkRegionLocationIsCached(TABLE_NAME, TEST_UTIL.getConnection()); |
| checkExistence(TABLE_NAME, row, FAMILY, QUALIFIER); |
| } |
| |
| @Test |
| public void testCachingForHTableMultiPut() throws Exception { |
| List<Put> multiput = new ArrayList<Put>(); |
| for (int i = 0; i < 10; i++) { |
| Put put = new Put(Bytes.toBytes("htable_multi_put" + i)); |
| byte[] value = Bytes.toBytes("value_" + i); |
| put.addColumn(FAMILY, QUALIFIER, value); |
| multiput.add(put); |
| } |
| |
| try (Table table = TEST_UTIL.getConnection().getTable(TABLE_NAME)) { |
| table.put(multiput); |
| } |
| checkRegionLocationIsCached(TABLE_NAME, TEST_UTIL.getConnection()); |
| for (int i = 0; i < 10; i++) { |
| checkExistence(TABLE_NAME, Bytes.toBytes("htable_multi_put" + i), FAMILY, QUALIFIER); |
| } |
| } |
| |
| /** |
| * Method to check whether the cached region location is non-empty for the given table. It repeats |
| * the same check several times as clearing of cache by some async operations may not reflect |
| * immediately. |
| */ |
| private void checkRegionLocationIsCached(final TableName tableName, final Connection conn) |
| throws InterruptedException, IOException { |
| for (int count = 0; count < 50; count++) { |
| int number = ((AsyncConnectionImpl) conn.toAsyncConnection()).getLocator() |
| .getNumberOfCachedRegionLocations(tableName); |
| assertNotEquals("Expected non-zero number of cached region locations", 0, number); |
| Thread.sleep(100); |
| } |
| } |
| |
| /** |
| * Method to check whether the passed row exists in the given table |
| */ |
| private static void checkExistence(final TableName tableName, final byte[] row, |
| final byte[] family, final byte[] qualifier) throws Exception { |
| // verify that the row exists |
| Result r; |
| Get get = new Get(row); |
| get.addColumn(family, qualifier); |
| int nbTry = 0; |
| try (Table table = TEST_UTIL.getConnection().getTable(tableName)) { |
| do { |
| assertTrue("Failed to get row after " + nbTry + " tries", nbTry < 50); |
| nbTry++; |
| Thread.sleep(100); |
| r = table.get(get); |
| } while (r == null || r.getValue(family, qualifier) == null); |
| } |
| } |
| } |