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/*
* 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.drill.exec.pop;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import java.io.IOException;
import org.apache.drill.categories.PlannerTest;
import org.apache.drill.exec.exception.FragmentSetupException;
import org.apache.drill.exec.planner.PhysicalPlanReader;
import org.apache.drill.exec.planner.PhysicalPlanReaderTestFactory;
import org.apache.drill.exec.planner.fragment.Fragment;
import org.apache.drill.exec.work.foreman.ForemanSetupException;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(PlannerTest.class)
public class TestFragmenter extends PopUnitTestBase {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TestFragmenter.class);
@Test
public void ensureOneFragment() throws FragmentSetupException, IOException, ForemanSetupException {
PhysicalPlanReader ppr = PhysicalPlanReaderTestFactory.defaultPhysicalPlanReader(CONFIG);
Fragment b = getRootFragment(ppr, "/physical_test1.json");
assertEquals(1, getFragmentCount(b));
assertEquals(0, b.getReceivingExchangePairs().size());
assertNull(b.getSendingExchange());
}
@Test
public void ensureThreeFragments() throws FragmentSetupException, IOException, ForemanSetupException {
PhysicalPlanReader ppr = PhysicalPlanReaderTestFactory.defaultPhysicalPlanReader(CONFIG);
Fragment b = getRootFragment(ppr, "/physical_double_exchange.json");
logger.debug("Fragment Node {}", b);
assertEquals(3, getFragmentCount(b));
assertEquals(1, b.getReceivingExchangePairs().size());
assertNull(b.getSendingExchange());
// get first child.
b = b.iterator().next().getNode();
assertEquals(1, b.getReceivingExchangePairs().size());
assertNotNull(b.getSendingExchange());
b = b.iterator().next().getNode();
assertEquals(0, b.getReceivingExchangePairs().size());
assertNotNull(b.getSendingExchange());
}
}
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