content: /**
   * 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
   * <p/>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p/>
   * 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.bigtop.itest.hbase.smoke;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.fs.FileSystem;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.hbase.HBaseConfiguration;
  import org.apache.hadoop.hbase.HColumnDescriptor;
  import org.apache.hadoop.hbase.HTableDescriptor;
  import org.apache.hadoop.hbase.client.HBaseAdmin;
  import org.apache.hadoop.hbase.client.HTable;
  import org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  import org.apache.bigtop.itest.hbase.util.HBaseTestUtil;
  import org.apache.bigtop.itest.shell.Shell;
  
  public class TestLoadIncrementalHFiles {
    private static final byte[] FAMILY = Bytes.toBytes("f1");
    private static final byte[] QUALIFIER = Bytes.toBytes("q1");
    private static final byte[][] SPLIT_KEYS = new byte[][]{
        Bytes.toBytes("ddd"),
        Bytes.toBytes("ppp")
    };
    private static Shell sh = new Shell("/bin/bash -s");
  
    /**
     * Test case that creates some regions and loads
     * HFiles that fit snugly inside those regions
     */
    @Test
    public void testSimpleLoad() throws Exception {
      runTest("testSimpleLoad",
          new byte[][][]{
              new byte[][]{Bytes.toBytes("aaaa"), Bytes.toBytes("cccc")},
              new byte[][]{Bytes.toBytes("ddd"), Bytes.toBytes("ooo")},
          });
    }
  
    /**
     * Test case that creates some regions and loads
     * HFiles that cross the boundaries of those regions
     */
    @Test
    public void testRegionCrossingLoad() throws Exception {
      runTest("testRegionCrossingLoad",
          new byte[][][]{
              new byte[][]{Bytes.toBytes("aaaa"), Bytes.toBytes("eee")},
              new byte[][]{Bytes.toBytes("fff"), Bytes.toBytes("zzz")},
          });
    }
  
    private void chmod(String uri) {
      sh.exec("hadoop fs -chmod -R 777 " + uri);
      assertEquals("chmod failed", 0, sh.getRet());
    }
  
    private void runTest(String testName, byte[][][] hfileRanges)
        throws Exception {
      FileSystem fs = HBaseTestUtil.getClusterFileSystem();
      Path dir = HBaseTestUtil.getMROutputDir(testName);
      Path familyDir = new Path(dir, Bytes.toString(FAMILY));
      Configuration conf = HBaseConfiguration.create();
  
      int hfileIdx = 0;
      for (byte[][] range : hfileRanges) {
        byte[] from = range[0];
        byte[] to = range[1];
        HBaseTestUtil.createHFile(conf, fs, new Path(familyDir, "hfile_" + hfileIdx++),
            FAMILY, QUALIFIER, from, to, 1000);
      }
      int expectedRows = hfileIdx * 1000;
  
      HBaseAdmin admin = new HBaseAdmin(conf);
      final byte[] TABLE = HBaseTestUtil.getTestTableName(testName);
      HTableDescriptor htd = new HTableDescriptor(TABLE);
      htd.addFamily(new HColumnDescriptor(FAMILY));
  
      admin.createTable(htd, SPLIT_KEYS);
  
      // Before we can load the HFiles, we need to set the permissions so that
      // HBase has write access to familyDir's contents
      chmod(familyDir.toString());
  
      HTable table = new HTable(conf, TABLE);
      LoadIncrementalHFiles loader = new LoadIncrementalHFiles(conf);
      loader.doBulkLoad(dir, table);
  
      assertEquals(expectedRows, HBaseTestUtil.countRows(table));
  
      // disable and drop if we succeeded to verify
      admin.disableTable(TABLE);
      admin.deleteTable(TABLE);
      fs.delete(dir, true);
    }
  
  }
  