package org.apache.cassandra.db; /* * * 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. * */ import java.net.InetAddress; import java.util.Map; import java.util.UUID; import java.util.concurrent.TimeUnit; import org.junit.Test; import org.apache.cassandra.SchemaLoader; import org.apache.cassandra.cql3.UntypedResultSet; import org.apache.cassandra.db.compaction.CompactionManager; import org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy; import org.apache.cassandra.db.marshal.Int32Type; import org.apache.cassandra.db.marshal.UUIDType; import org.apache.cassandra.utils.ByteBufferUtil; import org.apache.cassandra.utils.FBUtilities; import com.google.common.collect.Iterators; import static org.junit.Assert.assertEquals; import static org.apache.cassandra.cql3.QueryProcessor.processInternal; public class HintedHandOffTest extends SchemaLoader { public static final String KEYSPACE4 = "Keyspace4"; public static final String STANDARD1_CF = "Standard1"; public static final String COLUMN1 = "column1"; // Test compaction of hints column family. It shouldn't remove all columns on compaction. @Test public void testCompactionOfHintsCF() throws Exception { // prepare hints column family Keyspace systemKeyspace = Keyspace.open("system"); ColumnFamilyStore hintStore = systemKeyspace.getColumnFamilyStore(SystemKeyspace.HINTS_CF); hintStore.clearUnsafe(); hintStore.metadata.gcGraceSeconds(36000); // 10 hours hintStore.setCompactionStrategyClass(SizeTieredCompactionStrategy.class.getCanonicalName()); hintStore.disableAutoCompaction(); // insert 1 hint RowMutation rm = new RowMutation(KEYSPACE4, ByteBufferUtil.bytes(1)); rm.add(STANDARD1_CF, ByteBufferUtil.bytes(String.valueOf(COLUMN1)), ByteBufferUtil.EMPTY_BYTE_BUFFER, System.currentTimeMillis()); HintedHandOffManager.instance.hintFor(rm, HintedHandOffManager.calculateHintTTL(rm), UUID.randomUUID()).apply(); // flush data to disk hintStore.forceBlockingFlush(); assertEquals(1, hintStore.getSSTables().size()); // submit compaction FBUtilities.waitOnFuture(HintedHandOffManager.instance.compact()); while (CompactionManager.instance.getPendingTasks() > 0 || CompactionManager.instance.getActiveCompactions() > 0) TimeUnit.SECONDS.sleep(1); // single row should not be removed because of gc_grace_seconds // is 10 hours and there are no any tombstones in sstable assertEquals(1, hintStore.getSSTables().size()); } @Test public void testHintsMetrics() throws Exception { for (int i = 0; i < 99; i++) HintedHandOffManager.instance.metrics.incrPastWindow(InetAddress.getLocalHost()); HintedHandOffManager.instance.metrics.log(); UntypedResultSet rows = processInternal("SELECT hints_dropped FROM system." + SystemKeyspace.PEER_EVENTS_CF); Map<UUID, Integer> returned = rows.one().getMap("hints_dropped", UUIDType.instance, Int32Type.instance); assertEquals(Iterators.getLast(returned.values().iterator()).intValue(), 99); } }