/*
 * Licensed 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 io.prestosql.tests.sql;

import java.util.concurrent.atomic.AtomicInteger;

public class TestTable
        implements AutoCloseable
{
    private final SqlExecutor sqlExecutor;
    private final String name;

    private static final AtomicInteger instanceCounter = new AtomicInteger();

    public TestTable(SqlExecutor sqlExecutor, String namePrefix, String createDdlTemplate)
    {
        this.sqlExecutor = sqlExecutor;
        this.name = namePrefix + "_" + instanceCounter.incrementAndGet();
        sqlExecutor.execute(createDdlTemplate.replace("{TABLE_NAME}", this.name));
    }

    public String getName()
    {
        return name;
    }

    @Override
    public void close()
    {
        sqlExecutor.execute("DROP TABLE " + name);
    }
}

@@ -604,256 +604,400 @@
 ava.
-util.concurrent.atomic.AtomicInteger;%0A%0Apublic class TestTable%0A        implements AutoCloseable%0A%7B%0A    private final SqlExecutor sqlExecutor;%0A    private final String name;%0A%0A    private static final AtomicInteger instanceCounter = new AtomicInteger()
+security.SecureRandom;%0A%0Aimport static java.lang.Character.MAX_RADIX;%0Aimport static java.lang.Math.abs;%0Aimport static java.lang.Math.min;%0A%0Apublic class TestTable%0A        implements AutoCloseable%0A%7B%0A    private static final SecureRandom random = new SecureRandom();%0A    private static final int RANDOM_SUFFIX_LENGTH = 12;%0A%0A    private final SqlExecutor sqlExecutor;%0A    private final String name
 ;%0A%0A 
@@ -1175,39 +1175,25 @@
 %22 + 
-instanceCounter.incrementAndGet
+randomTableSuffix
 ();%0A
@@ -1444,11 +1444,242 @@
 );%0A    %7D
+%0A%0A    private static String randomTableSuffix()%0A    %7B%0A        String randomSuffix = Long.toString(abs(random.nextLong()), MAX_RADIX);%0A        return randomSuffix.substring(0, min(RANDOM_SUFFIX_LENGTH, randomSuffix.length()));%0A    %7D
 %0A%7D%0A

Make TestTable name really unique