/**
    * 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.client;
  
  import java.io.IOException;
  import java.util.UUID;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
  import org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy;
  import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
  import org.apache.hadoop.hbase.testclassification.LargeTests;
  import org.junit.BeforeClass;
  import org.junit.experimental.categories.Category;
  
  /**
   * This class tests that the use of a temporary snapshot directory supports snapshot functionality
   * while the temporary directory is on the same file system as the root directory
   * <p>
   * This is an end-to-end test for the snapshot utility
   */
  @Category(LargeTests.class)
  public class TestSnapshotDFSTemporaryDirectory
      extends TestSnapshotTemporaryDirectory {
  
    /**
     * Setup the config for the cluster
     *
     * @throws Exception on failure
     */
    @BeforeClass public static void setupCluster() throws Exception {
      setupConf(UTIL.getConfiguration());
      UTIL.startMiniCluster(NUM_RS);
      admin = UTIL.getHBaseAdmin();
    }
  
    private static void setupConf(Configuration conf) throws IOException {
      // disable the ui
      conf.setInt("hbase.regionsever.info.port", -1);
      // change the flush size to a small amount, regulating number of store files
      conf.setInt("hbase.hregion.memstore.flush.size", 25000);
      // so make sure we get a compaction when doing a load, but keep around some
      // files in the store
      conf.setInt("hbase.hstore.compaction.min", 10);
      conf.setInt("hbase.hstore.compactionThreshold", 10);
      // block writes if we get to 12 store files
      conf.setInt("hbase.hstore.blockingStoreFiles", 12);
      // Enable snapshot
      conf.setBoolean(SnapshotManager.HBASE_SNAPSHOT_ENABLED, true);
      conf.set(HConstants.HBASE_REGION_SPLIT_POLICY_KEY,
          ConstantSizeRegionSplitPolicy.class.getName());
  
      String snapshotPath = UTIL.getDefaultRootDirPath().toString() + Path.SEPARATOR +
          UUID.randomUUID().toString() + Path.SEPARATOR + ".tmpdir" + Path.SEPARATOR;
      conf.set(SnapshotDescriptionUtils.SNAPSHOT_WORKING_DIR, "file://" + new Path(snapshotPath).toUri());
    }
  }