| /** |
| * 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.hadoop.hbase; |
| |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.client.HTable; |
| import org.apache.hadoop.hbase.client.ResultScanner; |
| import org.apache.hadoop.hbase.client.Scan; |
| import org.apache.hadoop.hbase.master.HMaster; |
| import org.apache.hadoop.hbase.regionserver.HRegionServer; |
| import org.apache.hadoop.hbase.zookeeper.MiniZooKeeperCluster; |
| import org.apache.zookeeper.KeeperException; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category(MediumTests.class) |
| public class TestLocalHBaseCluster { |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| /** |
| * Check that we can start a local HBase cluster specifying a custom master |
| * and regionserver class and then cast back to those classes; also that |
| * the cluster will launch and terminate cleanly. See HBASE-6011. |
| */ |
| @Test |
| public void testLocalHBaseCluster() throws Exception { |
| Configuration conf = TEST_UTIL.getConfiguration(); |
| conf.set(HConstants.HBASE_DIR, TEST_UTIL.getDataTestDir("hbase.rootdir"). |
| makeQualified(TEST_UTIL.getTestFileSystem().getUri(), |
| TEST_UTIL.getTestFileSystem().getWorkingDirectory()).toString()); |
| MiniZooKeeperCluster zkCluster = TEST_UTIL.startMiniZKCluster(); |
| conf.set(HConstants.ZOOKEEPER_CLIENT_PORT, Integer.toString(zkCluster.getClientPort())); |
| LocalHBaseCluster cluster = new LocalHBaseCluster(conf, 1, 1, MyHMaster.class, |
| MyHRegionServer.class); |
| // Can we cast back to our master class? |
| try { |
| ((MyHMaster)cluster.getMaster(0)).setZKCluster(zkCluster); |
| } catch (ClassCastException e) { |
| fail("Could not cast master to our class"); |
| } |
| // Can we cast back to our regionserver class? |
| try { |
| ((MyHRegionServer)cluster.getRegionServer(0)).echo(42); |
| } catch (ClassCastException e) { |
| fail("Could not cast regionserver to our class"); |
| } |
| // Does the cluster start successfully? |
| try { |
| cluster.startup(); |
| waitForClusterUp(conf); |
| } catch (IOException e) { |
| fail("LocalHBaseCluster did not start successfully"); |
| } finally { |
| cluster.shutdown(); |
| } |
| } |
| |
| private void waitForClusterUp(Configuration conf) throws IOException { |
| HTable t = new HTable(conf, HConstants.META_TABLE_NAME); |
| ResultScanner s = t.getScanner(new Scan()); |
| while (s.next() != null) { |
| continue; |
| } |
| s.close(); |
| t.close(); |
| } |
| |
| /** |
| * A private master class similar to that used by HMasterCommandLine when |
| * running in local mode. |
| */ |
| public static class MyHMaster extends HMaster { |
| private MiniZooKeeperCluster zkcluster = null; |
| |
| public MyHMaster(Configuration conf) throws IOException, KeeperException, |
| InterruptedException { |
| super(conf); |
| } |
| |
| @Override |
| public void run() { |
| super.run(); |
| if (this.zkcluster != null) { |
| try { |
| this.zkcluster.shutdown(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| void setZKCluster(final MiniZooKeeperCluster zkcluster) { |
| this.zkcluster = zkcluster; |
| } |
| } |
| |
| /** |
| * A private regionserver class with a dummy method for testing casts |
| */ |
| public static class MyHRegionServer extends HRegionServer { |
| |
| public MyHRegionServer(Configuration conf) throws IOException, |
| InterruptedException { |
| super(conf); |
| } |
| |
| public int echo(int val) { |
| return val; |
| } |
| } |
| } |