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SAMZA-2329: Chain watermark future to the result future in onMessageAsync #1167

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Merged
mynameborat merged 1 commit into from
Sep 24, 2019
Merged

SAMZA-2329: Chain watermark future to the result future in onMessageAsync #1167

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16 changes: 8 additions & 8 deletions samza-core/src/main/java/org/apache/samza/operators/impl/OperatorImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -191,14 +191,14 @@ public final CompletionStage<Void> onMessageAsync(M message, MessageCollector co
.toArray(CompletableFuture[]::new));
});

return result.thenAccept(x -> {
WatermarkFunction watermarkFn = getOperatorSpec().getWatermarkFn();
if (watermarkFn != null) {
// check whether there is new watermark emitted from the user function
Long outputWm = watermarkFn.getOutputWatermark();
propagateWatermark(outputWm, collector, coordinator);
}
});
WatermarkFunction watermarkFn = getOperatorSpec().getWatermarkFn();
if (watermarkFn != null) {
// check whether there is new watermark emitted from the user function
Long outputWm = watermarkFn.getOutputWatermark();
return result.thenCompose(ignored -> propagateWatermark(outputWm, collector, coordinator));
}

return result;
}

/**
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