| /** |
| * 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.assertEquals; |
| |
| import java.util.concurrent.ForkJoinPool; |
| import java.util.stream.Collectors; |
| import java.util.stream.IntStream; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.Waiter.ExplainingPredicate; |
| 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 TestAsyncTableScannerCloseWhileSuspending { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestAsyncTableScannerCloseWhileSuspending.class); |
| |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| private static TableName TABLE_NAME = TableName.valueOf("async"); |
| |
| private static byte[] FAMILY = Bytes.toBytes("cf"); |
| |
| private static byte[] CQ = Bytes.toBytes("cq"); |
| |
| private static AsyncConnection CONN; |
| |
| private static AsyncTable<?> TABLE; |
| |
| @BeforeClass |
| public static void setUp() throws Exception { |
| TEST_UTIL.startMiniCluster(1); |
| TEST_UTIL.createTable(TABLE_NAME, FAMILY); |
| CONN = ConnectionFactory.createAsyncConnection(TEST_UTIL.getConfiguration()).get(); |
| TABLE = CONN.getTable(TABLE_NAME, ForkJoinPool.commonPool()); |
| TABLE.putAll(IntStream.range(0, 100).mapToObj( |
| i -> new Put(Bytes.toBytes(String.format("%02d", i))).addColumn(FAMILY, CQ, Bytes.toBytes(i))) |
| .collect(Collectors.toList())).get(); |
| } |
| |
| @AfterClass |
| public static void tearDown() throws Exception { |
| CONN.close(); |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| private int getScannersCount() { |
| return TEST_UTIL.getHBaseCluster().getRegionServerThreads().stream() |
| .map(t -> t.getRegionServer()).mapToInt(rs -> rs.getRSRpcServices().getScannersCount()) |
| .sum(); |
| } |
| |
| @Test |
| public void testCloseScannerWhileSuspending() throws Exception { |
| try (ResultScanner scanner = TABLE.getScanner(new Scan().setMaxResultSize(1))) { |
| TEST_UTIL.waitFor(10000, 100, new ExplainingPredicate<Exception>() { |
| |
| @Override |
| public boolean evaluate() throws Exception { |
| return ((AsyncTableResultScanner) scanner).isSuspended(); |
| } |
| |
| @Override |
| public String explainFailure() throws Exception { |
| return "The given scanner has been suspended in time"; |
| } |
| }); |
| assertEquals(1, getScannersCount()); |
| } |
| TEST_UTIL.waitFor(10000, 100, new ExplainingPredicate<Exception>() { |
| |
| @Override |
| public boolean evaluate() throws Exception { |
| return getScannersCount() == 0; |
| } |
| |
| @Override |
| public String explainFailure() throws Exception { |
| return "Still have " + getScannersCount() + " scanners opened"; |
| } |
| }); |
| } |
| } |