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
   *
   *     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.cql3;
  
  import java.util.ArrayList;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Random;
  import java.util.Set;
  
  import org.junit.Test;
  
  public class ManyRowsTest extends CQLTester
  {
      /**
       * Migrated from cql_tests.py:TestCQL.large_count_test()
       */
      @Test
      public void testLargeCount() throws Throwable
      {
          createTable("CREATE TABLE %s (k int, v int, PRIMARY KEY (k))");
  
          // We know we page at 10K, so test counting just before, at 10K, just after and
          // a bit after that.
          for (int k = 1; k < 10000; k++)
              execute("INSERT INTO %s (k) VALUES (?)", k);
  
          assertRows(execute("SELECT COUNT(*) FROM %s"), row(9999L));
  
          execute("INSERT INTO %s (k) VALUES (?)", 10000);
  
          assertRows(execute("SELECT COUNT(*) FROM %s"), row(10000L));
  
          execute("INSERT INTO %s (k) VALUES (?)", 10001);
  
          assertRows(execute("SELECT COUNT(*) FROM %s"), row(10001L));
  
          for (int k = 10002; k < 15001; k++)
              execute("INSERT INTO %s (k) VALUES (?)", k);
  
          assertRows(execute("SELECT COUNT(*) FROM %s"), row(15000L));
      }
  
      /**
       * Test for CASSANDRA-8410,
       * migrated from cql_tests.py:TestCQL.large_clustering_in_test()
       */
      @Test
      public void testLargeClustering() throws Throwable
      {
          createTable("CREATE TABLE %s (k int, c int, v int, PRIMARY KEY (k, c) )");
  
          execute("INSERT INTO %s (k, c, v) VALUES (?, ?, ?)", 0, 0, 0);
  
          // try to fetch one existing row and 9999 non-existing rows
          List<Integer> inValues = new ArrayList(10000);
          for (int i = 0; i < 10000; i++)
              inValues.add(i);
  
          assertRows(execute("SELECT * FROM %s WHERE k=? AND c IN ?", 0, inValues),
                     row(0, 0, 0));
  
          // insert approximately 1000 random rows between 0 and 10k
          Random rnd = new Random();
          Set<Integer> clusteringValues = new HashSet<>();
          for (int i = 0; i < 1000; i++)
              clusteringValues.add(rnd.nextInt(10000));
  
          clusteringValues.add(0);
  
          for (int i : clusteringValues) // TODO - this was done in parallel by dtests
              execute("INSERT INTO %s (k, c, v) VALUES (?, ?, ?)", 0, i, i);
  
          assertRowCount(execute("SELECT * FROM %s WHERE k=? AND c IN ?", 0, inValues), clusteringValues.size());
      }
  }
  