| /** |
| * 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 static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| 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; |
| |
| /** |
| * Testcase for HBASE-21032, where use the wrong readType from a Scan instance which is actually a |
| * get scan and cause returning only 1 cell per rpc call. |
| */ |
| @Category({ ClientTests.class, MediumTests.class }) |
| public class TestGetScanPartialResult { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestGetScanPartialResult.class); |
| |
| private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| private static final TableName TABLE = TableName.valueOf("table"); |
| private static final byte[] CF = { 'c', 'f' }; |
| private static final byte[] ROW = { 'r', 'o', 'w' }; |
| private static final int VALUE_SIZE = 10000; |
| private static final int NUM_COLUMNS = 300; |
| |
| @BeforeClass |
| public static void setUp() throws Exception { |
| TEST_UTIL.startMiniCluster(); |
| TEST_UTIL.createTable(TABLE, CF); |
| } |
| |
| @AfterClass |
| public static void tearDown() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| private static byte[] makeLargeValue(int size) { |
| byte[] v = new byte[size]; |
| for (int i = 0; i < size; i++) { |
| v[i] = 0; |
| } |
| return v; |
| } |
| |
| @Test |
| public void test() throws IOException { |
| try (Table t = TEST_UTIL.getConnection().getTable(TABLE)) { |
| // populate a row with bunch of columns and large values |
| // to cause scan to return partials |
| byte[] val = makeLargeValue(VALUE_SIZE); |
| Put p = new Put(ROW); |
| for (int i = 0; i < NUM_COLUMNS; i++) { |
| p.addColumn(CF, Bytes.toBytes(Integer.toString(i)), val); |
| } |
| t.put(p); |
| |
| Scan scan = new Scan(); |
| scan.withStartRow(ROW); |
| scan.withStopRow(ROW, true); |
| scan.setAllowPartialResults(true); |
| scan.setMaxResultSize(2L * 1024 * 1024); |
| scan.readVersions(1); |
| ResultScanner scanner = t.getScanner(scan); |
| |
| int nResults = 0; |
| int nCells = 0; |
| for (Result result = scanner.next(); (result != null); result = scanner.next()) { |
| nResults++; |
| nCells += result.listCells().size(); |
| } |
| assertEquals(NUM_COLUMNS, nCells); |
| assertTrue(nResults < 5); |
| } |
| } |
| } |