001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver.wal;
019
020import static org.junit.Assert.assertArrayEquals;
021import static org.junit.Assert.assertFalse;
022
023import java.io.IOException;
024import java.util.Arrays;
025import java.util.List;
026import org.apache.hadoop.fs.FSDataOutputStream;
027import org.apache.hadoop.fs.Path;
028import org.apache.hadoop.fs.StreamCapabilities;
029import org.apache.hadoop.hbase.HBaseClassTestRule;
030import org.apache.hadoop.hbase.HBaseTestingUtil;
031import org.apache.hadoop.hbase.TableName;
032import org.apache.hadoop.hbase.client.Get;
033import org.apache.hadoop.hbase.client.Put;
034import org.apache.hadoop.hbase.client.Table;
035import org.apache.hadoop.hbase.testclassification.LargeTests;
036import org.apache.hadoop.hbase.testclassification.RegionServerTests;
037import org.apache.hadoop.hbase.util.Bytes;
038import org.apache.hadoop.hbase.util.CommonFSUtils;
039import org.apache.hadoop.hbase.wal.WALFactory;
040import org.apache.hadoop.hdfs.DFSTestUtil;
041import org.apache.hadoop.hdfs.DistributedFileSystem;
042import org.apache.hadoop.hdfs.MiniDFSCluster;
043import org.apache.hadoop.hdfs.client.HdfsAdmin;
044import org.junit.After;
045import org.junit.Before;
046import org.junit.BeforeClass;
047import org.junit.ClassRule;
048import org.junit.Test;
049import org.junit.experimental.categories.Category;
050import org.junit.runner.RunWith;
051import org.junit.runners.Parameterized;
052import org.junit.runners.Parameterized.Parameter;
053import org.junit.runners.Parameterized.Parameters;
054
055@RunWith(Parameterized.class)
056@Category({ RegionServerTests.class, LargeTests.class })
057public class TestHBaseWalOnEC {
058
059  @ClassRule
060  public static final HBaseClassTestRule CLASS_RULE =
061    HBaseClassTestRule.forClass(TestHBaseWalOnEC.class);
062
063  private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();
064
065  @BeforeClass
066  public static void setUpBeforeClass() throws Exception {
067    MiniDFSCluster cluster = UTIL.startMiniDFSCluster(3); // Need 3 DNs for RS-3-2 policy
068    DistributedFileSystem fs = cluster.getFileSystem();
069
070    DFSTestUtil.enableAllECPolicies(fs);
071
072    HdfsAdmin hdfsAdmin = new HdfsAdmin(fs.getUri(), UTIL.getConfiguration());
073    hdfsAdmin.setErasureCodingPolicy(new Path("/"), "RS-3-2-1024k");
074
075    try (FSDataOutputStream out = fs.create(new Path("/canary"))) {
076      // If this comes back as having hflush then some test setup assumption is wrong.
077      // Fail the test so that a developer has to look and triage
078      assertFalse("Did not enable EC!", out.hasCapability(StreamCapabilities.HFLUSH));
079    }
080
081    UTIL.getConfiguration().setBoolean(CommonFSUtils.UNSAFE_STREAM_CAPABILITY_ENFORCE, true);
082
083  }
084
085  @Parameter
086  public String walProvider;
087
088  @Parameters
089  public static List<Object[]> params() {
090    return Arrays.asList(new Object[] { "asyncfs" }, new Object[] { "filesystem" });
091  }
092
093  @Before
094  public void setUp() throws Exception {
095    UTIL.getConfiguration().set(WALFactory.WAL_PROVIDER, walProvider);
096    UTIL.startMiniCluster(3);
097  }
098
099  @After
100  public void tearDown() throws Exception {
101    UTIL.shutdownMiniCluster();
102  }
103
104  @Test
105  public void testReadWrite() throws IOException {
106    byte[] row = Bytes.toBytes("row");
107    byte[] cf = Bytes.toBytes("cf");
108    byte[] cq = Bytes.toBytes("cq");
109    byte[] value = Bytes.toBytes("value");
110
111    TableName name = TableName.valueOf(getClass().getSimpleName());
112
113    Table t = UTIL.createTable(name, cf);
114    t.put(new Put(row).addColumn(cf, cq, value));
115
116    UTIL.getAdmin().flush(name);
117
118    assertArrayEquals(value, t.get(new Get(row)).getValue(cf, cq));
119  }
120}