| /* |
| * 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.cassandra.cache; |
| |
| import org.apache.cassandra.schema.TableMetadata; |
| import org.apache.cassandra.schema.ColumnMetadata; |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.marshal.AsciiType; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.junit.Assert; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.SchemaLoader; |
| import org.apache.cassandra.Util; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.schema.KeyspaceParams; |
| import org.apache.cassandra.service.CacheService; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| import static org.apache.cassandra.utils.Clock.Global.currentTimeMillis; |
| |
| public class AutoSavingCacheTest |
| { |
| private static final String KEYSPACE1 = "AutoSavingCacheTest1"; |
| private static final String CF_STANDARD1 = "Standard1"; |
| |
| @BeforeClass |
| public static void defineSchema() throws ConfigurationException |
| { |
| SchemaLoader.prepareServer(); |
| SchemaLoader.createKeyspace(KEYSPACE1, |
| KeyspaceParams.simple(1), |
| TableMetadata.builder(KEYSPACE1, CF_STANDARD1) |
| .addPartitionKeyColumn("pKey", AsciiType.instance) |
| .addRegularColumn("col1", AsciiType.instance)); |
| } |
| |
| @Test |
| public void testSerializeAndLoadKeyCache0kB() throws Exception |
| { |
| DatabaseDescriptor.setColumnIndexCacheSize(0); |
| doTestSerializeAndLoadKeyCache(); |
| } |
| |
| @Test |
| public void testSerializeAndLoadKeyCache() throws Exception |
| { |
| DatabaseDescriptor.setColumnIndexCacheSize(8); |
| doTestSerializeAndLoadKeyCache(); |
| } |
| |
| private static void doTestSerializeAndLoadKeyCache() throws Exception |
| { |
| ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD1); |
| cfs.truncateBlocking(); |
| for (int i = 0; i < 2; i++) |
| { |
| ColumnMetadata colDef = ColumnMetadata.regularColumn(cfs.metadata(), ByteBufferUtil.bytes("col1"), AsciiType.instance); |
| RowUpdateBuilder rowBuilder = new RowUpdateBuilder(cfs.metadata(), currentTimeMillis(), "key1"); |
| rowBuilder.add(colDef, "val1"); |
| rowBuilder.build().apply(); |
| Util.flush(cfs); |
| } |
| |
| Assert.assertEquals(2, cfs.getLiveSSTables().size()); |
| |
| // preheat key cache |
| for (SSTableReader sstable : cfs.getLiveSSTables()) |
| sstable.getPosition(Util.dk("key1"), SSTableReader.Operator.EQ); |
| |
| AutoSavingCache<KeyCacheKey, RowIndexEntry> keyCache = CacheService.instance.keyCache; |
| |
| // serialize to file |
| keyCache.submitWrite(keyCache.size()).get(); |
| keyCache.clear(); |
| |
| Assert.assertEquals(0, keyCache.size()); |
| |
| // then load saved |
| keyCache.loadSavedAsync().get(); |
| for (SSTableReader sstable : cfs.getLiveSSTables()) |
| Assert.assertNotNull(keyCache.get(new KeyCacheKey(cfs.metadata(), sstable.descriptor, ByteBufferUtil.bytes("key1")))); |
| } |
| } |