Examples with WindowingStrategy org.apache.flink.table.planner.plan.logical.WindowingStrategy used on opensource projects

Example 1 with WindowingStrategy

use of org.apache.flink.table.planner.plan.logical.WindowingStrategy in project flink by apache.

the class TwoStageOptimizedWindowAggregateRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    final StreamPhysicalWindowAggregate windowAgg = call.rel(0);
    final RelNode realInput = call.rel(2);
    final WindowingStrategy windowing = windowAgg.windowing();
    RelTraitSet localTraitSet = realInput.getTraitSet().plus(ModifyKindSetTrait.INSERT_ONLY()).plus(UpdateKindTrait.NONE());
    StreamPhysicalLocalWindowAggregate localAgg = new StreamPhysicalLocalWindowAggregate(windowAgg.getCluster(), localTraitSet, realInput, windowAgg.grouping(), windowAgg.aggCalls(), windowing);
    // grouping keys is forwarded by local agg, use indices instead of groupings
    int[] globalGrouping = IntStream.range(0, windowAgg.grouping().length).toArray();
    FlinkRelDistribution globalDistribution = createDistribution(globalGrouping);
    // create exchange if needed
    RelNode newInput = FlinkExpandConversionRule.satisfyDistribution(FlinkConventions.STREAM_PHYSICAL(), localAgg, globalDistribution);
    RelTraitSet globalAggProvidedTraitSet = windowAgg.getTraitSet();
    // we put sliceEnd/windowEnd at the end of local output fields
    int endIndex = localAgg.getRowType().getFieldCount() - 1;
    final WindowingStrategy globalWindowing;
    if (windowing instanceof TimeAttributeWindowingStrategy) {
        globalWindowing = new SliceAttachedWindowingStrategy(windowing.getWindow(), windowing.getTimeAttributeType(), endIndex);
    } else {
        globalWindowing = new WindowAttachedWindowingStrategy(windowing.getWindow(), windowing.getTimeAttributeType(), endIndex);
    }
    StreamPhysicalGlobalWindowAggregate globalAgg = new StreamPhysicalGlobalWindowAggregate(windowAgg.getCluster(), globalAggProvidedTraitSet, newInput, realInput.getRowType(), globalGrouping, windowAgg.aggCalls(), globalWindowing, windowAgg.namedWindowProperties());
    call.transformTo(globalAgg);
}

Example 2 with WindowingStrategy

use of org.apache.flink.table.planner.plan.logical.WindowingStrategy in project flink by apache.

the class TwoStageOptimizedWindowAggregateRule method matches.

@Override
public boolean matches(RelOptRuleCall call) {
    final StreamPhysicalWindowAggregate windowAgg = call.rel(0);
    final RelNode realInput = call.rel(2);
    final TableConfig tableConfig = unwrapContext(call.getPlanner()).getTableConfig();
    final WindowingStrategy windowing = windowAgg.windowing();
    // the two-phase optimization must be enabled
    if (getAggPhaseStrategy(tableConfig) == AggregatePhaseStrategy.ONE_PHASE) {
        return false;
    }
    // otherwise the processing-time can't be materialized in a single node
    if (!windowing.isRowtime()) {
        return false;
    }
    // all aggregate function should support merge() method
    if (!AggregateUtil.doAllSupportPartialMerge(windowAgg.aggInfoList().aggInfos())) {
        return false;
    }
    return !isInputSatisfyRequiredDistribution(realInput, windowAgg.grouping());
}