/*
* 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 com.facebook.presto.execution.scheduler;
import com.facebook.presto.OutputBuffers;
import com.facebook.presto.OutputBuffers.OutputBufferId;
import com.google.common.collect.ImmutableList;
import org.testng.annotations.Test;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;
import static com.facebook.presto.sql.planner.SystemPartitioningHandle.FIXED_HASH_DISTRIBUTION;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;
public class TestPartitionedOutputBufferManager
{
@Test
public void test()
throws Exception
{
AtomicReference<OutputBuffers> outputBufferTarget = new AtomicReference<>();
PartitionedOutputBufferManager hashOutputBufferManager = new PartitionedOutputBufferManager(FIXED_HASH_DISTRIBUTION, 4, outputBufferTarget::set);
// output buffers are set immediately when the manager is created
assertOutputBuffers(outputBufferTarget.get());
// add buffers, which does not cause an error
hashOutputBufferManager.addOutputBuffers(ImmutableList.of(new OutputBufferId(0)), false);
assertOutputBuffers(outputBufferTarget.get());
hashOutputBufferManager.addOutputBuffers(ImmutableList.of(new OutputBufferId(3)), true);
assertOutputBuffers(outputBufferTarget.get());
// try to a buffer out side of the partition range, which should result in an error
try {
hashOutputBufferManager.addOutputBuffers(ImmutableList.of(new OutputBufferId(5)), false);
fail("Expected IllegalStateException");
}
catch (IllegalStateException e) {
}
assertOutputBuffers(outputBufferTarget.get());
// try to a buffer out side of the partition range, which should result in an error
try {
hashOutputBufferManager.addOutputBuffers(ImmutableList.of(new OutputBufferId(6)), true);
fail("Expected IllegalStateException");
}
catch (IllegalStateException e) {
}
assertOutputBuffers(outputBufferTarget.get());
}
private static void assertOutputBuffers(OutputBuffers outputBuffers)
{
assertNotNull(outputBuffers);
assertTrue(outputBuffers.getVersion() > 0);
assertTrue(outputBuffers.isNoMoreBufferIds());
Map<OutputBufferId, Integer> buffers = outputBuffers.getBuffers();
assertEquals(buffers.size(), 4);
for (int partition = 0; partition < 4; partition++) {
assertEquals(buffers.get(new OutputBufferId(partition)), Integer.valueOf(partition));
}
}
}