| /** |
| * 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.regionserver; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.HBaseTestCase; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HColumnDescriptor; |
| import org.apache.hadoop.hbase.HTableDescriptor; |
| import org.apache.hadoop.hbase.KeyValueUtil; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.Scan; |
| import org.apache.hadoop.hbase.io.compress.Compression; |
| import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding; |
| import org.apache.hadoop.hbase.io.hfile.CacheConfig; |
| import org.apache.hadoop.hbase.io.hfile.CacheStats; |
| import org.apache.hadoop.hbase.testclassification.RegionServerTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @SuppressWarnings("deprecation") |
| @Category({RegionServerTests.class, SmallTests.class}) |
| public class TestBlocksScanned extends HBaseTestCase { |
| private static byte [] FAMILY = Bytes.toBytes("family"); |
| private static byte [] COL = Bytes.toBytes("col"); |
| private static byte [] START_KEY = Bytes.toBytes("aaa"); |
| private static byte [] END_KEY = Bytes.toBytes("zzz"); |
| private static int BLOCK_SIZE = 70; |
| |
| private static HBaseTestingUtility TEST_UTIL = null; |
| |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| TEST_UTIL = new HBaseTestingUtility(); |
| } |
| |
| @Test |
| public void testBlocksScanned() throws Exception { |
| byte [] tableName = Bytes.toBytes("TestBlocksScanned"); |
| HTableDescriptor table = new HTableDescriptor(TableName.valueOf(tableName)); |
| |
| table.addFamily( |
| new HColumnDescriptor(FAMILY) |
| .setMaxVersions(10) |
| .setBlockCacheEnabled(true) |
| .setBlocksize(BLOCK_SIZE) |
| .setCompressionType(Compression.Algorithm.NONE) |
| ); |
| _testBlocksScanned(table); |
| } |
| |
| @Test |
| public void testBlocksScannedWithEncoding() throws Exception { |
| byte [] tableName = Bytes.toBytes("TestBlocksScannedWithEncoding"); |
| HTableDescriptor table = new HTableDescriptor(TableName.valueOf(tableName)); |
| |
| table.addFamily( |
| new HColumnDescriptor(FAMILY) |
| .setMaxVersions(10) |
| .setBlockCacheEnabled(true) |
| .setDataBlockEncoding(DataBlockEncoding.FAST_DIFF) |
| .setBlocksize(BLOCK_SIZE) |
| .setCompressionType(Compression.Algorithm.NONE) |
| ); |
| _testBlocksScanned(table); |
| } |
| |
| private void _testBlocksScanned(HTableDescriptor table) throws Exception { |
| Region r = createNewHRegion(table, START_KEY, END_KEY, TEST_UTIL.getConfiguration()); |
| addContent(r, FAMILY, COL); |
| r.flush(true); |
| |
| CacheStats stats = new CacheConfig(TEST_UTIL.getConfiguration()).getBlockCache().getStats(); |
| long before = stats.getHitCount() + stats.getMissCount(); |
| // Do simple test of getting one row only first. |
| Scan scan = new Scan(Bytes.toBytes("aaa"), Bytes.toBytes("aaz")); |
| scan.addColumn(FAMILY, COL); |
| scan.setMaxVersions(1); |
| |
| InternalScanner s = r.getScanner(scan); |
| List<Cell> results = new ArrayList<Cell>(); |
| while (s.next(results)) |
| ; |
| s.close(); |
| |
| int expectResultSize = 'z' - 'a'; |
| assertEquals(expectResultSize, results.size()); |
| |
| int kvPerBlock = (int) Math.ceil(BLOCK_SIZE / |
| (double) KeyValueUtil.ensureKeyValue(results.get(0)).getLength()); |
| Assert.assertEquals(2, kvPerBlock); |
| |
| long expectDataBlockRead = (long) Math.ceil(expectResultSize / (double) kvPerBlock); |
| long expectIndexBlockRead = expectDataBlockRead; |
| |
| assertEquals(expectIndexBlockRead+expectDataBlockRead, stats.getHitCount() + stats.getMissCount() - before); |
| } |
| } |