phoenix-core/src/it/java/org/apache/phoenix/end2end/ParallelStatsEnabledIT.java

/*
 * 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.phoenix.end2end;

import java.util.Map;

import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
import org.apache.phoenix.coprocessor.TaskRegionObserver;
import org.apache.phoenix.jdbc.PhoenixDatabaseMetaData;
import org.apache.phoenix.query.BaseTest;
import org.apache.phoenix.query.QueryServices;
import org.apache.phoenix.util.ReadOnlyProps;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.experimental.categories.Category;

import com.google.common.collect.Maps;

/**
 * Base class for tests whose methods run in parallel with statistics enabled.
 * You must create unique names using {@link #generateUniqueName()} for each
 * table and sequence used to prevent collisions.
 */
@Category(ParallelStatsEnabledTest.class)
public abstract class ParallelStatsEnabledIT extends BaseTest {

    protected static RegionCoprocessorEnvironment TaskRegionEnvironment;

    @BeforeClass
    public static synchronized final void doSetup() throws Exception {
        Map<String, String> props = Maps.newHashMapWithExpectedSize(1);
        props.put(QueryServices.STATS_GUIDEPOST_WIDTH_BYTES_ATTRIB, Long.toString(20));
        props.put(QueryServices.STATS_UPDATE_FREQ_MS_ATTRIB, Long.toString(5));
        props.put(QueryServices.MAX_SERVER_METADATA_CACHE_TIME_TO_LIVE_MS_ATTRIB, Long.toString(5));
        props.put(QueryServices.USE_STATS_FOR_PARALLELIZATION, Boolean.toString(true));
        setUpTestDriver(new ReadOnlyProps(props.entrySet().iterator()));

        TaskRegionEnvironment =
                (RegionCoprocessorEnvironment)getUtility()
                        .getRSForFirstRegionInTable(
                                PhoenixDatabaseMetaData.SYSTEM_TASK_HBASE_TABLE_NAME)
                        .getOnlineRegions(PhoenixDatabaseMetaData.SYSTEM_TASK_HBASE_TABLE_NAME)
                        .get(0).getCoprocessorHost()
                        .findCoprocessorEnvironment(TaskRegionObserver.class.getName());
    }

    @AfterClass
    public static synchronized void freeResources() throws Exception {
        BaseTest.freeResourcesIfBeyondThreshold();
    }
}