@Test
public void testTranslation() {
try {
final String ITERATION_NAME = "Test Name";
final String AGGREGATOR_NAME = "AggregatorName";
final String BC_SET_GATHER_NAME = "gather messages";
final String BC_SET_SUM_NAME = "sum updates";
final String BC_SET_APLLY_NAME = "apply updates";
final int NUM_ITERATIONS = 13;
final int ITERATION_parallelism = 77;
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Long> bcGather = env.fromElements(1L);
DataSet<Long> bcSum = env.fromElements(1L);
DataSet<Long> bcApply = env.fromElements(1L);
DataSet<Vertex<Long, Long>> result;
// ------------ construct the test program ------------------
{
DataSet<Edge<Long, NullValue>> edges =
env.fromElements(new Tuple3<Long, Long, NullValue>(1L, 2L, NullValue.getInstance()))
.map(new Tuple3ToEdgeMap<Long, NullValue>());
Graph<Long, Long, NullValue> graph = Graph.fromDataSet(edges, new InitVertices(), env);
GSAConfiguration parameters = new GSAConfiguration();
parameters.registerAggregator(AGGREGATOR_NAME, new LongSumAggregator());
parameters.setName(ITERATION_NAME);
parameters.setParallelism(ITERATION_parallelism);
parameters.addBroadcastSetForGatherFunction(BC_SET_GATHER_NAME, bcGather);
parameters.addBroadcastSetForSumFunction(BC_SET_SUM_NAME, bcSum);
parameters.addBroadcastSetForApplyFunction(BC_SET_APLLY_NAME, bcApply);
result =
graph
.runGatherSumApplyIteration(
new GatherNeighborIds(),
new SelectMinId(),
new UpdateComponentId(),
NUM_ITERATIONS,
parameters)
.getVertices();
result.output(new DiscardingOutputFormat<Vertex<Long, Long>>());
}
// ------------- validate the java program ----------------
assertTrue(result instanceof DeltaIterationResultSet);
DeltaIterationResultSet<?, ?> resultSet = (DeltaIterationResultSet<?, ?>) result;
DeltaIteration<?, ?> iteration = (DeltaIteration<?, ?>) resultSet.getIterationHead();
// check the basic iteration properties
assertEquals(NUM_ITERATIONS, resultSet.getMaxIterations());
assertArrayEquals(new int[] {0}, resultSet.getKeyPositions());
assertEquals(ITERATION_parallelism, iteration.getParallelism());
assertEquals(ITERATION_NAME, iteration.getName());
assertEquals(
AGGREGATOR_NAME,
iteration.getAggregators().getAllRegisteredAggregators().iterator().next().getName());
// validate that the semantic properties are set as they should
TwoInputUdfOperator<?, ?, ?, ?> solutionSetJoin =
(TwoInputUdfOperator<?, ?, ?, ?>) resultSet.getNextWorkset();
assertTrue(
solutionSetJoin.getSemanticProperties().getForwardingTargetFields(0, 0).contains(0));
assertTrue(
solutionSetJoin.getSemanticProperties().getForwardingTargetFields(1, 0).contains(0));
SingleInputUdfOperator<?, ?, ?> sumReduce =
(SingleInputUdfOperator<?, ?, ?>) solutionSetJoin.getInput1();
SingleInputUdfOperator<?, ?, ?> gatherMap =
(SingleInputUdfOperator<?, ?, ?>) sumReduce.getInput();
// validate that the broadcast sets are forwarded
assertEquals(bcGather, gatherMap.getBroadcastSets().get(BC_SET_GATHER_NAME));
assertEquals(bcSum, sumReduce.getBroadcastSets().get(BC_SET_SUM_NAME));
assertEquals(bcApply, solutionSetJoin.getBroadcastSets().get(BC_SET_APLLY_NAME));
} catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
fail(e.getMessage());
}
}
