Examples with MistDataEvent edu.snu.mist.core.MistDataEvent used on opensource projects

Example 11 with MistDataEvent

use of edu.snu.mist.core.MistDataEvent in project mist by snuspl.

the class ReduceByKeyOperatorTest method testReduceByKeyOperatorGetState.

/**
 * Test getting state of the ReduceByKeyOperator.
 */
@Test
@SuppressWarnings("unchecked")
public void testReduceByKeyOperatorGetState() throws InterruptedException {
    // Generate the current ReduceByKeyOperator state.
    final List<MistDataEvent> inputStream = ImmutableList.of(createTupleEvent("a", 1, 1L), createTupleEvent("b", 1, 2L), createTupleEvent("c", 1, 3L), createTupleEvent("a", 1, 4L), createTupleEvent("d", 1, 5L), createTupleEvent("a", 1, 6L), createTupleEvent("b", 1, 7L));
    // Generate the expected ReduceByKeyOperator state.
    final Map<String, Integer> expectedOperatorState = new HashMap<>();
    expectedOperatorState.put("a", 3);
    expectedOperatorState.put("b", 2);
    expectedOperatorState.put("c", 1);
    expectedOperatorState.put("d", 1);
    final int keyIndex = 0;
    final MISTBiFunction<Integer, Integer, Integer> wordCountFunc = (oldVal, val) -> oldVal + val;
    final ReduceByKeyOperator<String, Integer> wcOperator = new ReduceByKeyOperator<>(keyIndex, wordCountFunc);
    final List<MistEvent> result = new LinkedList<>();
    wcOperator.setOutputEmitter(new OutputBufferEmitter(result));
    inputStream.stream().forEach(wcOperator::processLeftData);
    // Get the current ReduceByKeyOperator's state.
    final Map<String, Object> operatorStateMap = wcOperator.getStateSnapshot();
    final Map<String, Integer> operatorState = (Map<String, Integer>) operatorStateMap.get("reduceByKeyState");
    // Compare the expected and original operator's state.
    Assert.assertEquals(expectedOperatorState, operatorState);
}

Example 12 with MistDataEvent

use of edu.snu.mist.core.MistDataEvent in project mist by snuspl.

the class ReduceByKeyOperatorTest method testReduceByKeyOperator.

/**
 * Test whether reduceByKeyOperator generates correct outputs.
 * Input: a list of tuples: ("a", 1), ("b", 1), ("c", 1), ("a", 1), ("d", 1), ("a", 1), ("b", 1)
 * Expected outputs: word counts:
 *  {"a": 1},
 *  {"a": 1, "b": 1},
 *  {"a": 1, "b": 1, "c": 1}
 *  {"a": 2, "b": 1, "c": 1}
 *  {"a": 2, "b": 1, "c": 1, "d": 1}
 *  {"a": 3, "b": 1, "c": 1, "d": 1}
 *  {"a": 3, "b": 2, "c": 1, "d": 1}
 */
@Test
public void testReduceByKeyOperator() throws InjectionException {
    // input stream
    final List<MistDataEvent> inputStream = ImmutableList.of(createTupleEvent("a", 1, 1L), createTupleEvent("b", 1, 2L), createTupleEvent("c", 1, 3L), createTupleEvent("a", 1, 4L), createTupleEvent("d", 1, 5L), createTupleEvent("a", 1, 6L), createTupleEvent("b", 1, 7L));
    // expected output
    final Map<String, Integer> o0 = new HashMap<>();
    o0.put("a", 1);
    final Map<String, Integer> o1 = new HashMap<>(o0);
    o1.put("b", 1);
    final Map<String, Integer> o2 = new HashMap<>(o1);
    o2.put("c", 1);
    final Map<String, Integer> o3 = new HashMap<>(o2);
    o3.put("a", 2);
    final Map<String, Integer> o4 = new HashMap<>(o3);
    o4.put("d", 1);
    final Map<String, Integer> o5 = new HashMap<>(o4);
    o5.put("a", 3);
    final Map<String, Integer> o6 = new HashMap<>(o5);
    o6.put("b", 2);
    final List<MistEvent> expectedStream = ImmutableList.of(new MistDataEvent(o0, 1L), new MistDataEvent(o1, 2L), new MistDataEvent(o2, 3L), new MistDataEvent(o3, 4L), new MistDataEvent(o4, 5L), new MistDataEvent(o5, 6L), new MistDataEvent(o6, 7L));
    // Set the key index of tuple
    final int keyIndex = 0;
    // Reduce function for word count
    final MISTBiFunction<Integer, Integer, Integer> wordCountFunc = (oldVal, val) -> oldVal + val;
    final ReduceByKeyOperator<String, Integer> wcOperator = new ReduceByKeyOperator<>(keyIndex, wordCountFunc);
    // output test
    final List<MistEvent> result = new LinkedList<>();
    wcOperator.setOutputEmitter(new OutputBufferEmitter(result));
    inputStream.stream().forEach(wcOperator::processLeftData);
    LOG.info("expected: " + expectedStream);
    LOG.info("result: " + result);
    Assert.assertEquals(expectedStream, result);
}

Example 13 with MistDataEvent

use of edu.snu.mist.core.MistDataEvent in project mist by snuspl.

the class ReduceByKeyOperatorTest method testReduceByKeyOperatorSetState.

/**
 * Test setting state of the ReduceByKeyOperator.
 */
@Test
@SuppressWarnings("unchecked")
public void testReduceByKeyOperatorSetState() throws InterruptedException {
    // Generate a new state and set it to the state of a new ReduceByKeyWindowOperator.
    final Map<String, Integer> expectedOperatorState = new HashMap<>();
    expectedOperatorState.put("a", 3);
    expectedOperatorState.put("b", 2);
    expectedOperatorState.put("c", 1);
    expectedOperatorState.put("d", 1);
    final Map<String, Object> loadStateMap = new HashMap<>();
    loadStateMap.put("reduceByKeyState", expectedOperatorState);
    final int keyIndex = 0;
    final MISTBiFunction<Integer, Integer, Integer> wordCountFunc = (oldVal, val) -> oldVal + val;
    final ReduceByKeyOperator reduceByKeyOperator = new ReduceByKeyOperator(keyIndex, wordCountFunc);
    reduceByKeyOperator.setState(loadStateMap);
    // Compare the original and the set operator.
    final Map<String, Object> operatorStateMap = reduceByKeyOperator.getStateSnapshot();
    final Map<String, Integer> operatorState = (Map<String, Integer>) operatorStateMap.get("reduceByKeyState");
    Assert.assertEquals(expectedOperatorState, operatorState);
    // Test if the operator can properly process data.
    final List<MistEvent> result = new LinkedList<>();
    reduceByKeyOperator.setOutputEmitter(new OutputBufferEmitter(result));
    reduceByKeyOperator.setState(operatorStateMap);
    final List<MistDataEvent> inputStream = ImmutableList.of(createTupleEvent("a", 1, 10L));
    inputStream.stream().forEach(reduceByKeyOperator::processLeftData);
    final List<MistEvent> expected = new LinkedList<>();
    final Map<String, Integer> o1 = new HashMap<>();
    o1.put("a", 4);
    o1.put("b", 2);
    o1.put("c", 1);
    o1.put("d", 1);
    expected.add(new MistDataEvent(o1, 10L));
    Assert.assertEquals(expected, result);
}

Example 14 with MistDataEvent

use of edu.snu.mist.core.MistDataEvent in project mist by snuspl.

the class StateTransitionOperatorTest method testStateTransitionOperatorGetState.

/**
 * Test getting state of StateTransitionOperator.
 */
@Test
public void testStateTransitionOperatorGetState() throws InterruptedException {
    // generate input data event
    final Map<String, Integer> value1 = new HashMap<>();
    value1.put("number", 1);
    final MistDataEvent data1 = new MistDataEvent(value1, 0L);
    final Map<String, Integer> value2 = new HashMap<>();
    value2.put("number", 2);
    final MistDataEvent data2 = new MistDataEvent(value2, 1L);
    // generate a set of final states
    final Set<String> finalSet = new HashSet<>();
    finalSet.add("1");
    finalSet.add("2");
    // generate a state table
    final Map<String, Collection<Tuple2<MISTPredicate, String>>> stateTable = new HashMap<>();
    final Collection<Tuple2<MISTPredicate, String>> list0 = new ArrayList<>();
    list0.add(new Tuple2<>(new RuleBasedEQPredicate("number", 1), "1"));
    final Collection<Tuple2<MISTPredicate, String>> list1 = new ArrayList<>();
    list1.add(new Tuple2<>(new RuleBasedEQPredicate("number", 2), "2"));
    stateTable.put("0", list0);
    stateTable.put("1", list1);
    final StateTransitionOperator stateTransitionOperator = new StateTransitionOperator("0", finalSet, stateTable);
    final List<MistEvent> result = new ArrayList<>();
    stateTransitionOperator.setOutputEmitter(new OutputBufferEmitter(result));
    stateTransitionOperator.processLeftData(data1);
    stateTransitionOperator.processLeftData(data2);
    // Generate the expected state
    final String expectedOperatorState = "2";
    // Get the
    final Map<String, Object> operatorState = stateTransitionOperator.getStateSnapshot();
    final String stateTransitionOperatorState = (String) operatorState.get("stateTransitionOperatorState");
    Assert.assertEquals(expectedOperatorState, stateTransitionOperatorState);
}

Example 15 with MistDataEvent

use of edu.snu.mist.core.MistDataEvent in project mist by snuspl.

the class StatelessOperatorTest method testMapOperation.

/**
 * Test map operation.
 * It converts string to tuple (string, 1).
 */
@Test
public void testMapOperation() throws InjectionException {
    // input stream
    final List<MistDataEvent> inputStream = ImmutableList.of(new MistDataEvent("a", 1L), new MistDataEvent("b", 2L), new MistDataEvent("d", 3L), new MistDataEvent("b", 4L), new MistDataEvent("c", 5L));
    // expected output
    final List<MistEvent> expectedStream = ImmutableList.of(new MistDataEvent(new Tuple<>("a", 1), 1L), new MistDataEvent(new Tuple<>("b", 1), 2L), new MistDataEvent(new Tuple<>("d", 1), 3L), new MistDataEvent(new Tuple<>("b", 1), 4L), new MistDataEvent(new Tuple<>("c", 1), 5L));
    // map function: convert string to tuple
    final MISTFunction<String, Tuple> mapFunc = (mapInput) -> new Tuple<>(mapInput, 1);
    final MapOperator<String, Tuple> mapOperator = new MapOperator<>(mapFunc);
    testStatelessOperator(inputStream, expectedStream, mapOperator);
}