| /** |
| * 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 org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.ArrayBackedTag; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.Tag; |
| import org.apache.hadoop.hbase.io.hfile.HFile; |
| 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.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.rules.TestName; |
| |
| @Category(MediumTests.class) |
| public class TestResultSizeEstimation { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestResultSizeEstimation.class); |
| |
| final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| final static int TAG_DATA_SIZE = 2048; |
| final static int SCANNER_DATA_LIMIT = TAG_DATA_SIZE + 256; |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| Configuration conf = TEST_UTIL.getConfiguration(); |
| // Need HFileV3 |
| conf.setInt(HFile.FORMAT_VERSION_KEY, HFile.MIN_FORMAT_VERSION_WITH_TAGS); |
| // effectively limit max result size to one entry if it has tags |
| conf.setLong(HConstants.HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY, SCANNER_DATA_LIMIT); |
| conf.setBoolean(ConnectionConfiguration.LOG_SCANNER_ACTIVITY, true); |
| TEST_UTIL.startMiniCluster(1); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @Test |
| public void testResultSizeEstimation() throws Exception { |
| byte [] ROW1 = Bytes.toBytes("testRow1"); |
| byte [] ROW2 = Bytes.toBytes("testRow2"); |
| byte [] FAMILY = Bytes.toBytes("testFamily"); |
| byte [] QUALIFIER = Bytes.toBytes("testQualifier"); |
| byte [] VALUE = Bytes.toBytes("testValue"); |
| |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| byte[][] FAMILIES = new byte[][] { FAMILY }; |
| Table table = TEST_UTIL.createTable(tableName, FAMILIES); |
| Put p = new Put(ROW1); |
| p.add(new KeyValue(ROW1, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE)); |
| table.put(p); |
| p = new Put(ROW2); |
| p.add(new KeyValue(ROW2, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE)); |
| table.put(p); |
| |
| Scan s = new Scan(); |
| s.setMaxResultSize(SCANNER_DATA_LIMIT); |
| ResultScanner rs = table.getScanner(s); |
| int count = 0; |
| while(rs.next() != null) { |
| count++; |
| } |
| assertEquals("Result size estimation did not work properly", 2, count); |
| rs.close(); |
| table.close(); |
| } |
| |
| @Test |
| public void testResultSizeEstimationWithTags() throws Exception { |
| byte [] ROW1 = Bytes.toBytes("testRow1"); |
| byte [] ROW2 = Bytes.toBytes("testRow2"); |
| byte [] FAMILY = Bytes.toBytes("testFamily"); |
| byte [] QUALIFIER = Bytes.toBytes("testQualifier"); |
| byte [] VALUE = Bytes.toBytes("testValue"); |
| |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| byte[][] FAMILIES = new byte[][] { FAMILY }; |
| Table table = TEST_UTIL.createTable(tableName, FAMILIES); |
| Put p = new Put(ROW1); |
| p.add(new KeyValue(ROW1, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE, |
| new Tag[] { new ArrayBackedTag((byte)1, new byte[TAG_DATA_SIZE]) })); |
| table.put(p); |
| p = new Put(ROW2); |
| p.add(new KeyValue(ROW2, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE, |
| new Tag[] { new ArrayBackedTag((byte)1, new byte[TAG_DATA_SIZE]) })); |
| table.put(p); |
| |
| Scan s = new Scan(); |
| s.setMaxResultSize(SCANNER_DATA_LIMIT); |
| ResultScanner rs = table.getScanner(s); |
| int count = 0; |
| while(rs.next() != null) { |
| count++; |
| } |
| assertEquals("Result size estimation did not work properly", 2, count); |
| rs.close(); |
| table.close(); |
| } |
| } |