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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.
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package org.apache.drill.exec.physical.impl.limit;
import com.google.common.base.Charsets;
import com.google.common.io.Files;
import com.codahale.metrics.MetricRegistry;
import junit.framework.Assert;
import mockit.Injectable;
import mockit.NonStrictExpectations;
import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.common.util.FileUtils;
import org.apache.drill.exec.ExecTest;
import org.apache.drill.exec.compile.CodeCompiler;
import org.apache.drill.exec.expr.fn.FunctionImplementationRegistry;
import org.apache.drill.exec.memory.BufferAllocator;
import org.apache.drill.exec.memory.TopLevelAllocator;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.physical.PhysicalPlan;
import org.apache.drill.exec.physical.base.FragmentRoot;
import org.apache.drill.exec.physical.impl.OperatorCreatorRegistry;
import org.apache.drill.exec.physical.impl.ImplCreator;
import org.apache.drill.exec.physical.impl.SimpleRootExec;
import org.apache.drill.exec.planner.PhysicalPlanReader;
import org.apache.drill.exec.proto.CoordinationProtos;
import org.apache.drill.exec.proto.ExecProtos;
import org.apache.drill.exec.proto.BitControl.PlanFragment;
import org.apache.drill.exec.record.VectorWrapper;
import org.apache.drill.exec.rpc.user.UserServer;
import org.apache.drill.exec.server.DrillbitContext;
import org.apache.drill.exec.vector.BigIntVector;
import org.apache.drill.exec.vector.ValueVector;
import org.junit.Ignore;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class TestSimpleLimit extends ExecTest {
DrillConfig c = DrillConfig.create();
@Test
public void testLimit(@Injectable final DrillbitContext bitContext, @Injectable UserServer.UserClientConnection connection) throws Throwable{
new NonStrictExpectations(){{
bitContext.getMetrics(); result = new MetricRegistry();
bitContext.getAllocator(); result = new TopLevelAllocator();
bitContext.getOperatorCreatorRegistry(); result = new OperatorCreatorRegistry(c);
bitContext.getConfig(); result = c;
bitContext.getCompiler(); result = CodeCompiler.getTestCompiler(c);
}};
verifyLimitCount(bitContext, connection, "test1.json", 5);
}
@Test
public void testLimitNoEnd(@Injectable final DrillbitContext bitContext, @Injectable UserServer.UserClientConnection connection) throws Throwable{
new NonStrictExpectations(){{
bitContext.getMetrics(); result = new MetricRegistry();
bitContext.getAllocator(); result = new TopLevelAllocator();
bitContext.getOperatorCreatorRegistry(); result = new OperatorCreatorRegistry(c);
bitContext.getConfig(); result = c;
bitContext.getCompiler(); result = CodeCompiler.getTestCompiler(c);
}};
verifyLimitCount(bitContext, connection, "test3.json", 95);
}
@Test
@Ignore
// The testcase is not valid. "test4.json" using increasingBigInt(0) to generate a list of increasing number starting from 0, and verify the sum.
// However, when evaluate the increasingBitInt(0), if the outgoing batch could not hold the new value, doEval() return false, and start the
// next batch. But the value has already been increased by 1 in the prior failed try. Therefore, the sum of the generated number could be different,
// depending on the size of each outgoing batch, and when the batch could not hold any more values.
public void testLimitAcrossBatches(@Injectable final DrillbitContext bitContext, @Injectable UserServer.UserClientConnection connection) throws Throwable{
new NonStrictExpectations(){{
bitContext.getMetrics(); result = new MetricRegistry();
bitContext.getAllocator(); result = new TopLevelAllocator();
bitContext.getOperatorCreatorRegistry(); result = new OperatorCreatorRegistry(c);
bitContext.getConfig(); result = c;
bitContext.getCompiler(); result = CodeCompiler.getTestCompiler(c);
}};
verifyLimitCount(bitContext, connection, "test2.json", 69999);
long start = 30000;
long end = 100000;
long expectedSum = (end - start) * (end + start - 1) / 2; //Formula for sum of series
verifySum(bitContext, connection, "test4.json", 70000, expectedSum);
}
private void verifyLimitCount(DrillbitContext bitContext, UserServer.UserClientConnection connection, String testPlan, int expectedCount) throws Throwable {
PhysicalPlanReader reader = new PhysicalPlanReader(c, c.getMapper(), CoordinationProtos.DrillbitEndpoint.getDefaultInstance());
PhysicalPlan plan = reader.readPhysicalPlan(Files.toString(FileUtils.getResourceAsFile("/limit/" + testPlan), Charsets.UTF_8));
FunctionImplementationRegistry registry = new FunctionImplementationRegistry(c);
FragmentContext context = new FragmentContext(bitContext, PlanFragment.getDefaultInstance(), connection, registry);
SimpleRootExec exec = new SimpleRootExec(ImplCreator.getExec(context, (FragmentRoot) plan.getSortedOperators(false).iterator().next()));
int recordCount = 0;
while(exec.next()){
recordCount += exec.getRecordCount();
}
assertEquals(expectedCount, recordCount);
if(context.getFailureCause() != null){
throw context.getFailureCause();
}
assertTrue(!context.isFailed());
}
private void verifySum(DrillbitContext bitContext, UserServer.UserClientConnection connection, String testPlan, int expectedCount, long expectedSum) throws Throwable {
PhysicalPlanReader reader = new PhysicalPlanReader(c, c.getMapper(), CoordinationProtos.DrillbitEndpoint.getDefaultInstance());
PhysicalPlan plan = reader.readPhysicalPlan(Files.toString(FileUtils.getResourceAsFile("/limit/" + testPlan), Charsets.UTF_8));
FunctionImplementationRegistry registry = new FunctionImplementationRegistry(c);
FragmentContext context = new FragmentContext(bitContext, PlanFragment.getDefaultInstance(), connection, registry);
SimpleRootExec exec = new SimpleRootExec(ImplCreator.getExec(context, (FragmentRoot) plan.getSortedOperators(false).iterator().next()));
int recordCount = 0;
long sum = 0;
while(exec.next()){
recordCount += exec.getRecordCount();
BigIntVector v = (BigIntVector) exec.iterator().next();
for (int i = 0; i < v.getAccessor().getValueCount(); i++) {
sum += v.getAccessor().get(i);
}
}
assertEquals(expectedCount, recordCount);
assertEquals(expectedSum, sum);
if(context.getFailureCause() != null){
throw context.getFailureCause();
}
assertTrue(!context.isFailed());
}
}