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TestOutputNodeStats.java
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TestOutputNodeStats.java
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/*
* 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.cost;
import com.facebook.presto.sql.planner.Symbol;
import org.testng.annotations.Test;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static java.lang.Double.POSITIVE_INFINITY;
public class TestOutputNodeStats
extends BaseStatsCalculatorTest
{
@Test
public void testStatsForOutputNode()
{
PlanNodeStatsEstimate stats = PlanNodeStatsEstimate.builder()
.setOutputRowCount(100)
.addSymbolStatistics(
new Symbol("a"),
SymbolStatsEstimate.builder()
.setNullsFraction(0.3)
.setLowValue(1)
.setHighValue(30)
.setDistinctValuesCount(20)
.build())
.addSymbolStatistics(
new Symbol("b"),
SymbolStatsEstimate.builder()
.setNullsFraction(0.6)
.setLowValue(13.5)
.setHighValue(POSITIVE_INFINITY)
.setDistinctValuesCount(40)
.build())
.build();
tester().assertStatsFor(pb -> pb
.output(outputBuilder -> {
Symbol a = pb.symbol("a", BIGINT);
Symbol b = pb.symbol("b", DOUBLE);
outputBuilder
.source(pb.values(a, b))
.column(a, "a1")
.column(a, "a2")
.column(b, "b");
}))
.withSourceStats(stats)
.check(outputStats -> outputStats.equalTo(stats));
}
}