| /** |
| * 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 org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.client.Table; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| import java.util.UUID; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Test that an HBase cluster can run on top of an existing MiniDfsCluster |
| */ |
| @Category(MediumTests.class) |
| public class TestHBaseOnOtherDfsCluster { |
| |
| @Test |
| public void testOveralyOnOtherCluster() throws Exception { |
| // just run HDFS |
| HBaseTestingUtility util1 = new HBaseTestingUtility(); |
| MiniDFSCluster dfs = util1.startMiniDFSCluster(1); |
| |
| // run HBase on that HDFS |
| HBaseTestingUtility util2 = new HBaseTestingUtility(); |
| // set the dfs |
| util2.setDFSCluster(dfs, false); |
| util2.startMiniCluster(); |
| |
| //ensure that they are pointed at the same place |
| FileSystem fs = dfs.getFileSystem(); |
| FileSystem targetFs = util2.getDFSCluster().getFileSystem(); |
| assertFsSameUri(fs, targetFs); |
| |
| fs = FileSystem.get(util1.getConfiguration()); |
| targetFs = FileSystem.get(util2.getConfiguration()); |
| assertFsSameUri(fs, targetFs); |
| |
| Path randomFile = new Path("/"+UUID.randomUUID()); |
| assertTrue(targetFs.createNewFile(randomFile)); |
| assertTrue(fs.exists(randomFile)); |
| |
| // do a simple create/write to ensure the cluster works as expected |
| byte[] family = Bytes.toBytes("testfamily"); |
| TableName tablename = TableName.valueOf("testtable"); |
| Table table = util2.createTable(tablename, family); |
| Put p = new Put(new byte[] { 1, 2, 3 }); |
| p.addColumn(family, null, new byte[] { 1 }); |
| table.put(p); |
| |
| // shutdown and make sure cleanly shutting down |
| util2.shutdownMiniCluster(); |
| util1.shutdownMiniDFSCluster(); |
| } |
| |
| private void assertFsSameUri(FileSystem sourceFs, FileSystem targetFs) { |
| Path source = new Path(sourceFs.getUri()); |
| Path target = new Path(targetFs.getUri()); |
| assertEquals(source, target); |
| } |
| } |