src/test/java/org/apache/cassandra/distributed/test/SimpleReadWriteTest.java

/*
 * 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 org.junit.Assert;
import org.junit.Test;

import org.apache.cassandra.distributed.api.ConsistencyLevel;
import org.apache.cassandra.distributed.api.ICluster;

import static org.apache.cassandra.distributed.api.Feature.NETWORK;
import static org.apache.cassandra.distributed.shared.AssertUtils.*;

public class SimpleReadWriteTest extends TestBaseImpl
{
    @Test
    public void coordinatorReadTest() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            cluster.get(1).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 1, 1)");
            cluster.get(2).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 2, 2)");
            cluster.get(3).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 3, 3)");

            assertRows(cluster.coordinator(1).execute("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = ?",
                                                     ConsistencyLevel.ALL,
                                                     1),
                       row(1, 1, 1),
                       row(1, 2, 2),
                       row(1, 3, 3));
        }
    }

    @Test
    public void coordinatorWriteTest() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            cluster.coordinator(1).execute("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 1, 1)",
                                          ConsistencyLevel.QUORUM);

            for (int i = 0; i < 3; i++)
            {
                assertRows(cluster.get(1).executeInternal("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = 1"),
                           row(1, 1, 1));
            }

            assertRows(cluster.coordinator(1).execute("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = 1",
                                                     ConsistencyLevel.QUORUM),
                       row(1, 1, 1));
        }
    }

    @Test
    public void readRepairTest() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            cluster.get(1).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 1, 1)");
            cluster.get(2).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, 1, 1)");

            assertRows(cluster.get(3).executeInternal("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = 1"));

            assertRows(cluster.coordinator(1).execute("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = 1",
                                                     ConsistencyLevel.ALL), // ensure node3 in preflist
                       row(1, 1, 1));

            // Verify that data got repaired to the third node
            assertRows(cluster.get(3).executeInternal("SELECT * FROM " + KEYSPACE + ".tbl WHERE pk = 1"),
                       row(1, 1, 1));
        }
    }

    @Test
    public void simplePagedReadsTest() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            int size = 100;
            Object[][] results = new Object[size][];
            for (int i = 0; i < size; i++)
            {
                cluster.coordinator(1).execute("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, ?, ?)",
                                               ConsistencyLevel.QUORUM,
                                               i, i);
                results[i] = new Object[] { 1, i, i};
            }

            // Make sure paged read returns same results with different page sizes
            for (int pageSize : new int[] { 1, 2, 3, 5, 10, 20, 50})
            {
                assertRows(cluster.coordinator(1).executeWithPaging("SELECT * FROM " + KEYSPACE + ".tbl",
                                                                    ConsistencyLevel.QUORUM,
                                                                    pageSize),
                           results);
            }
        }
    }

    @Test
    public void pagingWithRepairTest() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            int size = 100;
            Object[][] results = new Object[size][];
            for (int i = 0; i < size; i++)
            {
                // Make sure that data lands on different nodes and not coordinator
                cluster.get(i % 2 == 0 ? 2 : 3).executeInternal("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, ?, ?)",
                                                                i, i);

                results[i] = new Object[] { 1, i, i};
            }

            // Make sure paged read returns same results with different page sizes
            for (int pageSize : new int[] { 1, 2, 3, 5, 10, 20, 50})
            {
                assertRows(cluster.coordinator(1).executeWithPaging("SELECT * FROM " + KEYSPACE + ".tbl",
                                                                    ConsistencyLevel.ALL,
                                                                    pageSize),
                           results);
            }

            assertRows(cluster.get(1).executeInternal("SELECT * FROM " + KEYSPACE + ".tbl"),
                       results);
        }
    }

    @Test
    public void pagingTests() throws Throwable
    {
        try (ICluster cluster = init(builder().withNodes(3).start());
             ICluster singleNode = init(builder().withNodes(1).withSubnet(1).start()))
        {
            cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");
            singleNode.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck))");

            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 10; j++)
                {
                    cluster.coordinator(1).execute("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, ?, ?)",
                                                   ConsistencyLevel.QUORUM,
                                                   i, j, i + i);
                    singleNode.coordinator(1).execute("INSERT INTO " + KEYSPACE + ".tbl (pk, ck, v) VALUES (1, ?, ?)",
                                                      ConsistencyLevel.QUORUM,
                                                      i, j, i + i);
                }
            }

            int[] pageSizes = new int[] { 1, 2, 3, 5, 10, 20, 50};
            String[] statements = new String [] {"SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck >= 5",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 AND ck <= 10",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 LIMIT 3",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck >= 5 LIMIT 2",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 AND ck <= 10 LIMIT 2",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 ORDER BY ck DESC",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck >= 5 ORDER BY ck DESC",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 AND ck <= 10 ORDER BY ck DESC",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 ORDER BY ck DESC LIMIT 3",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck >= 5 ORDER BY ck DESC LIMIT 2",
                                                 "SELECT * FROM " + KEYSPACE  + ".tbl WHERE pk = 1 AND ck > 5 AND ck <= 10 ORDER BY ck DESC LIMIT 2",
                                                 "SELECT DISTINCT pk FROM " + KEYSPACE  + ".tbl LIMIT 3",
                                                 "SELECT DISTINCT pk FROM " + KEYSPACE  + ".tbl WHERE pk IN (3,5,8,10)",
                                                 "SELECT DISTINCT pk FROM " + KEYSPACE  + ".tbl WHERE pk IN (3,5,8,10) LIMIT 2"
            };
            for (String statement : statements)
            {
                for (int pageSize : pageSizes)
                {
                    assertRows(cluster.coordinator(1)
                                      .executeWithPaging(statement,
                                                         ConsistencyLevel.QUORUM,  pageSize),
                               singleNode.coordinator(1)
                                         .executeWithPaging(statement,
                                                            ConsistencyLevel.QUORUM,  Integer.MAX_VALUE));
                }
            }

        }
    }
}