[GitHub] johnyangk closed pull request #177: [NEMO-316] CombinePartial/FinalTransform is not disabled in streaming mode

[GitBox <gi...@apache.org>]

johnyangk closed pull request #177: [NEMO-316] CombinePartial/FinalTransform is not disabled in streaming mode
URL: https://github.com/apache/incubator-nemo/pull/177
 
 
   

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diff --git a/compiler/frontend/beam/src/main/java/org/apache/nemo/compiler/frontend/beam/PipelineTranslator.java b/compiler/frontend/beam/src/main/java/org/apache/nemo/compiler/frontend/beam/PipelineTranslator.java
index 3e000d37f..7c6335751 100644
--- a/compiler/frontend/beam/src/main/java/org/apache/nemo/compiler/frontend/beam/PipelineTranslator.java
+++ b/compiler/frontend/beam/src/main/java/org/apache/nemo/compiler/frontend/beam/PipelineTranslator.java
@@ -341,7 +341,7 @@ private static void flattenTranslator(final PipelineTranslationContext ctx,
 
     // Check if the partial combining optimization can be applied.
     // If not, simply use the default Combine implementation by entering into it.
-    if (!isGlobalWindow(beamNode, ctx.getPipeline())) {
+    if (!(isMainInputBounded(beamNode, ctx.getPipeline()) && isGlobalWindow(beamNode, ctx.getPipeline()))) {
       // TODO #263: Partial Combining for Beam Streaming
       return Pipeline.PipelineVisitor.CompositeBehavior.ENTER_TRANSFORM;
     }
@@ -500,6 +500,7 @@ private static Transform createGBKTransform(
     }
   }
 
+
   /**
    * @param beamNode the beam node to be translated.
    * @param pipeline pipeline.
@@ -511,4 +512,16 @@ private static boolean isGlobalWindow(final TransformHierarchy.Node beamNode, fi
       Iterables.getOnlyElement(TransformInputs.nonAdditionalInputs(pTransform));
     return mainInput.getWindowingStrategy().getWindowFn() instanceof GlobalWindows;
   }
+
+  /**
+   * @param beamNode the beam node to be translated.
+   * @param pipeline pipeline.
+   * @return true if the main input bounded.
+   */
+  private static boolean isMainInputBounded(final TransformHierarchy.Node beamNode, final Pipeline pipeline) {
+    final AppliedPTransform pTransform = beamNode.toAppliedPTransform(pipeline);
+    final PCollection<?> mainInput = (PCollection<?>)
+      Iterables.getOnlyElement(TransformInputs.nonAdditionalInputs(pTransform));
+    return mainInput.isBounded() == PCollection.IsBounded.BOUNDED;
+  }
 }


 

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