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Example 11 with UnionIterator

use of org.apache.flink.runtime.operators.testutils.UnionIterator in project flink by apache.

the class NonReusingHashJoinIteratorITCase method testBuildFirstWithHighNumberOfCommonKeys.

@Test
public void testBuildFirstWithHighNumberOfCommonKeys() {
    // the size of the left and right inputs
    final int INPUT_1_SIZE = 200;
    final int INPUT_2_SIZE = 100;
    final int INPUT_1_DUPLICATES = 10;
    final int INPUT_2_DUPLICATES = 2000;
    final int DUPLICATE_KEY = 13;
    try {
        TupleGenerator generator1 = new TupleGenerator(SEED1, 500, 4096, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
        TupleGenerator generator2 = new TupleGenerator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
        final TestData.TupleGeneratorIterator gen1Iter = new TestData.TupleGeneratorIterator(generator1, INPUT_1_SIZE);
        final TestData.TupleGeneratorIterator gen2Iter = new TestData.TupleGeneratorIterator(generator2, INPUT_2_SIZE);
        final TestData.TupleConstantValueIterator const1Iter = new TestData.TupleConstantValueIterator(DUPLICATE_KEY, "LEFT String for Duplicate Keys", INPUT_1_DUPLICATES);
        final TestData.TupleConstantValueIterator const2Iter = new TestData.TupleConstantValueIterator(DUPLICATE_KEY, "RIGHT String for Duplicate Keys", INPUT_2_DUPLICATES);
        final List<MutableObjectIterator<Tuple2<Integer, String>>> inList1 = new ArrayList<>();
        inList1.add(gen1Iter);
        inList1.add(const1Iter);
        final List<MutableObjectIterator<Tuple2<Integer, String>>> inList2 = new ArrayList<>();
        inList2.add(gen2Iter);
        inList2.add(const2Iter);
        MutableObjectIterator<Tuple2<Integer, String>> input1 = new UnionIterator<>(inList1);
        MutableObjectIterator<Tuple2<Integer, String>> input2 = new UnionIterator<>(inList2);
        // collect expected data
        final Map<Integer, Collection<TupleMatch>> expectedMatchesMap = joinTuples(collectTupleData(input1), collectTupleData(input2));
        // re-create the whole thing for actual processing
        // reset the generators and iterators
        generator1.reset();
        generator2.reset();
        const1Iter.reset();
        const2Iter.reset();
        gen1Iter.reset();
        gen2Iter.reset();
        inList1.clear();
        inList1.add(gen1Iter);
        inList1.add(const1Iter);
        inList2.clear();
        inList2.add(gen2Iter);
        inList2.add(const2Iter);
        input1 = new UnionIterator<>(inList1);
        input2 = new UnionIterator<>(inList2);
        final TupleMatchRemovingJoin matcher = new TupleMatchRemovingJoin(expectedMatchesMap);
        final Collector<Tuple2<Integer, String>> collector = new DiscardingOutputCollector<>();
        NonReusingBuildFirstHashJoinIterator<Tuple2<Integer, String>, Tuple2<Integer, String>, Tuple2<Integer, String>> iterator = new NonReusingBuildFirstHashJoinIterator<>(input1, input2, this.recordSerializer, this.record1Comparator, this.recordSerializer, this.record2Comparator, this.recordPairComparator, this.memoryManager, ioManager, this.parentTask, 1.0, false, false, true);
        iterator.open();
        while (iterator.callWithNextKey(matcher, collector)) ;
        iterator.close();
        // assert that each expected match was seen
        for (Entry<Integer, Collection<TupleMatch>> entry : expectedMatchesMap.entrySet()) {
            if (!entry.getValue().isEmpty()) {
                Assert.fail("Collection for key " + entry.getKey() + " is not empty");
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail("An exception occurred during the test: " + e.getMessage());
    }
}
Also used : TestData(org.apache.flink.runtime.operators.testutils.TestData) MutableObjectIterator(org.apache.flink.util.MutableObjectIterator) UnionIterator(org.apache.flink.runtime.operators.testutils.UnionIterator) ArrayList(java.util.ArrayList) TupleGenerator(org.apache.flink.runtime.operators.testutils.TestData.TupleGenerator) NullKeyFieldException(org.apache.flink.types.NullKeyFieldException) DiscardingOutputCollector(org.apache.flink.runtime.operators.testutils.DiscardingOutputCollector) Tuple2(org.apache.flink.api.java.tuple.Tuple2) Collection(java.util.Collection) Test(org.junit.Test)

Aggregations

UnionIterator (org.apache.flink.runtime.operators.testutils.UnionIterator)11 Test (org.junit.Test)11 ArrayList (java.util.ArrayList)10 MutableObjectIterator (org.apache.flink.util.MutableObjectIterator)10 MemorySegment (org.apache.flink.core.memory.MemorySegment)6 MemoryAllocationException (org.apache.flink.runtime.memory.MemoryAllocationException)6 NullKeyFieldException (org.apache.flink.types.NullKeyFieldException)6 Tuple2 (org.apache.flink.api.java.tuple.Tuple2)5 Collection (java.util.Collection)4 HashMap (java.util.HashMap)4 Map (java.util.Map)4 DiscardingOutputCollector (org.apache.flink.runtime.operators.testutils.DiscardingOutputCollector)4 TestData (org.apache.flink.runtime.operators.testutils.TestData)4 IOException (java.io.IOException)3 UniformIntPairGenerator (org.apache.flink.runtime.operators.testutils.UniformIntPairGenerator)3 UniformRecordGenerator (org.apache.flink.runtime.operators.testutils.UniformRecordGenerator)3 IntPair (org.apache.flink.runtime.operators.testutils.types.IntPair)3 Record (org.apache.flink.types.Record)3 FlatJoinFunction (org.apache.flink.api.common.functions.FlatJoinFunction)2 TupleGenerator (org.apache.flink.runtime.operators.testutils.TestData.TupleGenerator)2