001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.io.util; 019 020import static org.junit.Assert.assertEquals; 021import static org.junit.Assert.assertThrows; 022 023import org.apache.hadoop.conf.Configuration; 024import org.apache.hadoop.hbase.HBaseClassTestRule; 025import org.apache.hadoop.hbase.HConstants; 026import org.apache.hadoop.hbase.testclassification.MiscTests; 027import org.apache.hadoop.hbase.testclassification.SmallTests; 028import org.junit.Before; 029import org.junit.ClassRule; 030import org.junit.Test; 031import org.junit.experimental.categories.Category; 032 033@Category({ MiscTests.class, SmallTests.class }) 034public class TestMemorySizeUtil { 035 036 @ClassRule 037 public static final HBaseClassTestRule CLASS_RULE = 038 HBaseClassTestRule.forClass(TestMemorySizeUtil.class); 039 040 private Configuration conf; 041 042 @Before 043 public void setup() { 044 conf = new Configuration(); 045 } 046 047 @Test 048 public void testValidateRegionServerHeapMemoryAllocation() { 049 // when memstore size + block cache size + default free heap min size == 1.0 050 conf.setFloat(MemorySizeUtil.MEMSTORE_SIZE_KEY, 0.4f); 051 conf.setFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, 0.4f); 052 assertEquals(HConstants.HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD, 0.2f, 0.0f); 053 MemorySizeUtil.validateRegionServerHeapMemoryAllocation(conf); 054 055 // when memstore size + block cache size + default free heap min size > 1.0 056 conf.setFloat(MemorySizeUtil.MEMSTORE_SIZE_KEY, 0.5f); 057 assertThrows(RuntimeException.class, 058 () -> MemorySizeUtil.validateRegionServerHeapMemoryAllocation(conf)); 059 060 // when free heap min size is set to 0, it should not throw an exception 061 conf.setFloat(MemorySizeUtil.MEMSTORE_SIZE_KEY, 0.5f); 062 conf.setFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, 0.5f); 063 conf.setLong(MemorySizeUtil.HBASE_REGION_SERVER_FREE_HEAP_MIN_MEMORY_SIZE_KEY, 0L); 064 MemorySizeUtil.validateRegionServerHeapMemoryAllocation(conf); 065 066 // when free heap min size is set to a negative value, it should be regarded as default value 067 conf.setLong(MemorySizeUtil.HBASE_REGION_SERVER_FREE_HEAP_MIN_MEMORY_SIZE_KEY, -1024L); 068 conf.setFloat(MemorySizeUtil.MEMSTORE_SIZE_KEY, 0.4f); 069 conf.setFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, 0.4f); 070 MemorySizeUtil.validateRegionServerHeapMemoryAllocation(conf); 071 072 conf.setFloat(MemorySizeUtil.MEMSTORE_SIZE_KEY, 0.41f); 073 assertThrows(RuntimeException.class, 074 () -> MemorySizeUtil.validateRegionServerHeapMemoryAllocation(conf)); 075 } 076 077 @Test 078 public void testGetRegionServerMinFreeHeapFraction() { 079 // when setting is not set, it should return the default value 080 conf.set(MemorySizeUtil.HBASE_REGION_SERVER_FREE_HEAP_MIN_MEMORY_SIZE_KEY, ""); 081 float minFreeHeapFraction = MemorySizeUtil.getRegionServerMinFreeHeapFraction(conf); 082 assertEquals(HConstants.HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD, minFreeHeapFraction, 0.0f); 083 084 // when setting to 0, it should return 0.0f 085 conf.set(MemorySizeUtil.HBASE_REGION_SERVER_FREE_HEAP_MIN_MEMORY_SIZE_KEY, "0"); 086 minFreeHeapFraction = MemorySizeUtil.getRegionServerMinFreeHeapFraction(conf); 087 assertEquals(0.0f, minFreeHeapFraction, 0.0f); 088 } 089}