| /* |
| * 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.service; |
| |
| import java.util.Objects; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.SchemaLoader; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.schema.KeyspaceParams; |
| import org.apache.cassandra.schema.Schema; |
| import org.apache.cassandra.schema.TableMetadata; |
| |
| import static org.apache.cassandra.SchemaLoader.standardCFMD; |
| import static org.apache.cassandra.service.CassandraDaemon.SPECULATION_THRESHOLD_UPDATER; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| |
| public class OptionalTasksTest |
| { |
| private static final String KEYSPACE = "OpitonalTasksTest"; |
| private static final String TABLE = "SpeculationThreshold"; |
| |
| @BeforeClass |
| public static void defineSchema() throws ConfigurationException |
| { |
| SchemaLoader.prepareServer(); |
| SchemaLoader.createKeyspace(KEYSPACE, KeyspaceParams.simple(1), standardCFMD(KEYSPACE, TABLE)); |
| } |
| |
| @Test |
| public void shouldIgnoreDroppedKeyspace() |
| { |
| // Set the initial sampling state... |
| TableMetadata metadata = Schema.instance.getTableMetadata(KEYSPACE, TABLE); |
| ColumnFamilyStore cfs = Schema.instance.getColumnFamilyStoreInstance(Objects.requireNonNull(metadata).id); |
| Objects.requireNonNull(cfs).metric.coordinatorReadLatency.update(100, TimeUnit.NANOSECONDS); |
| |
| // Remove the Keyspace name to make it invisible to the updater... |
| Keyspace removed = Schema.instance.removeKeyspaceInstance(KEYSPACE); |
| |
| try |
| { |
| long originalValue = cfs.sampleReadLatencyNanos; |
| |
| // ...and ensure that the speculation threshold updater doesn't run. |
| SPECULATION_THRESHOLD_UPDATER.run(); |
| |
| assertEquals(originalValue, cfs.sampleReadLatencyNanos); |
| } |
| finally |
| { |
| // Restore the removed Keyspace to put things back the way we found them. |
| Schema.instance.storeKeyspaceInstance(removed); |
| } |
| } |
| |
| @Test |
| public void shouldUpdateSpeculationThreshold() |
| { |
| // Set the initial sampling state... |
| TableMetadata metadata = Schema.instance.getTableMetadata(KEYSPACE, TABLE); |
| ColumnFamilyStore cfs = Schema.instance.getColumnFamilyStoreInstance(Objects.requireNonNull(metadata).id); |
| Objects.requireNonNull(cfs).metric.coordinatorReadLatency.update(100, TimeUnit.NANOSECONDS); |
| |
| long originalValue = cfs.sampleReadLatencyNanos; |
| |
| // ...and ensure that the speculation threshold updater runs. |
| SPECULATION_THRESHOLD_UPDATER.run(); |
| |
| assertNotEquals(originalValue, cfs.sampleReadLatencyNanos); |
| } |
| } |