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   * Licensed to the Apache Software Foundation (ASF) under one
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   * 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.cassandra.distributed.test;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.Arrays;
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.TimeoutException;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.stream.Collectors;
  
  import com.google.common.collect.Iterables;
  import com.google.common.collect.Sets;
  import com.google.common.util.concurrent.Uninterruptibles;
  import org.junit.Test;
  
  import net.bytebuddy.ByteBuddy;
  import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
  import net.bytebuddy.implementation.MethodDelegation;
  import org.apache.cassandra.db.ColumnFamilyStore;
  import org.apache.cassandra.db.Directories;
  import org.apache.cassandra.db.Keyspace;
  import org.apache.cassandra.db.lifecycle.SSTableSet;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.ConsistencyLevel;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  import static org.junit.Assert.assertEquals;
  
  public class CompactionOverlappingSSTableTest extends TestBaseImpl
  {
      @Test
      public void partialCompactionOverlappingTest() throws IOException, TimeoutException
      {
  
          try (Cluster cluster = init(builder().withNodes(1)
                                               .withDataDirCount(1)
                                               .withInstanceInitializer(BB::install)
                                               .start()))
          {
              cluster.schemaChange(withKeyspace("alter keyspace %s with replication = {'class': 'SimpleStrategy', 'replication_factor':3}"));
              cluster.schemaChange(withKeyspace("create table %s.tbl (id int primary key) with compaction = {'class':'SizeTieredCompactionStrategy', 'enabled': 'false'} AND gc_grace_seconds=0"));
              Set<Integer> expected = Sets.newHashSetWithExpectedSize(990);
              for (int i = 0; i < 1000; i++)
              {
                  cluster.coordinator(1).execute(withKeyspace("insert into %s.tbl (id) values (?)"), ConsistencyLevel.ONE, i);
                  if (i >= 10)
                      expected.add(i);
              }
              cluster.get(1).flush(KEYSPACE);
              for (int i = 0; i < 10; i++)
              {
                  cluster.coordinator(1).execute(withKeyspace("delete from %s.tbl where id = ?"), ConsistencyLevel.ONE, i);
                  cluster.get(1).flush(KEYSPACE);
              }
              assertEquals(expected, Arrays.stream(cluster.coordinator(1).execute(withKeyspace("select * from %s.tbl"), ConsistencyLevel.ONE))
                                           .map(x -> x[0])
                                           .collect(Collectors.toSet()));
  
              Uninterruptibles.sleepUninterruptibly(2, TimeUnit.SECONDS); // make sure tombstones are gc:able
  
              cluster.get(1).runOnInstance(() -> {
                  BB.enabled.set(true);
                  ColumnFamilyStore cfs = Keyspace.open(KEYSPACE).getColumnFamilyStore("tbl");
                  cfs.forceMajorCompaction();
                  assertEquals("We should have 2 sstables (not 1) after major compaction since we reduced the scope of the compaction",
                               2, Iterables.size(cfs.getSSTables(SSTableSet.CANONICAL)));
              });
              assertEquals(expected, Arrays.stream(cluster.coordinator(1).execute(withKeyspace("select * from %s.tbl"), ConsistencyLevel.ONE))
                                           .map(x -> x[0])
                                           .collect(Collectors.toSet()));
          }
      }
  
      public static class BB
      {
          static AtomicBoolean enabled = new AtomicBoolean();
          public static void install(ClassLoader cl, Integer i)
          {
              new ByteBuddy().rebase(Directories.class)
                             .method(named("hasDiskSpaceForCompactionsAndStreams").and(takesArguments(2)))
                             .intercept(MethodDelegation.to(BB.class))
                             .make()
                             .load(cl, ClassLoadingStrategy.Default.INJECTION);
          }
  
          public static boolean hasDiskSpaceForCompactionsAndStreams(Map<File,Long> ignore1, Map<File,Long> ignore2)
          {
              if (enabled.get())
              {
                  enabled.set(false);
                  return false;
              }
              return true;
          }
      }
  }
  