taegeonum commented on a change in pull request #318:
URL: https://github.com/apache/incubator-nemo/pull/318#discussion_r697936287
##########
File path: common/src/main/java/org/apache/nemo/common/ir/IRDAGChecker.java
##########
@@ -486,6 +489,28 @@ void addEncodingCompressionCheckers() {
singleEdgeCheckerList.add(compressAndDecompress);
}
+ void addIntermediateAccumulatorVertexCheckers() {
+ final NeighborChecker shuffleExecutorSet = ((v, inEdges, outEdges) -> {
+ if (v.getPropertyValue(ShuffleExecutorSetProperty.class).isPresent()) {
+ if (inEdges.size() != 1 || outEdges.size() != 1 ||
inEdges.stream().anyMatch(e ->
+ !e.getPropertyValue(CommunicationPatternProperty.class).get()
+ .equals(CommunicationPatternProperty.Value.PARTIAL_SHUFFLE))) {
+ return failure("Only intermediate accumulator vertex can have
shuffle executor set property", v);
Review comment:
Isn't `v` is intermediate accumulator vertex?
Or the comment should be `An intermediate accumulator vertex can only have
shuffle executor set property`?
##########
File path:
compiler/frontend/beam/src/main/java/org/apache/nemo/compiler/frontend/beam/transform/CombineTransform.java
##########
@@ -45,9 +45,9 @@
* @param <InputT> input type
* @param <OutputT> output type
*/
-public final class GBKTransform<K, InputT, OutputT>
+public final class CombineTransform<K, InputT, OutputT>
Review comment:
Could you explain why the class name is changed?
##########
File path: common/src/main/java/org/apache/nemo/common/ir/IRDAGChecker.java
##########
@@ -486,6 +489,28 @@ void addEncodingCompressionCheckers() {
singleEdgeCheckerList.add(compressAndDecompress);
}
+ void addIntermediateAccumulatorVertexCheckers() {
+ final NeighborChecker shuffleExecutorSet = ((v, inEdges, outEdges) -> {
+ if (v.getPropertyValue(ShuffleExecutorSetProperty.class).isPresent()) {
Review comment:
We can filter accumulator vertex by `v` instanceof
`PartialAccumulatorVertex` if we create `PartialAccumulatorVertex`
##########
File path:
common/src/main/java/org/apache/nemo/common/ir/vertex/executionproperty/ShuffleExecutorSetProperty.java
##########
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.nemo.common.ir.vertex.executionproperty;
+
+import org.apache.nemo.common.ir.executionproperty.VertexExecutionProperty;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+
+/**
+ * List of set of node names to limit the scheduling of the tasks of the
vertex to while shuffling.
+ */
+public final class ShuffleExecutorSetProperty extends
VertexExecutionProperty<ArrayList<HashSet<String>>> {
Review comment:
Is this only for paritial accumulator vertex? then please add some
comments.
`PartialShuffleDestinationExecutorSetProperty`?
##########
File path: common/src/main/java/org/apache/nemo/common/ir/IRDAG.java
##########
@@ -799,6 +800,39 @@ public void insert(final TaskSizeSplitterVertex toInsert) {
modifiedDAG = builder.build();
}
+ public void insert(final OperatorVertex accumulatorVertex, final IREdge
targetEdge) {
Review comment:
How about creating a new class `PartialAccumulatorVertex` that inherits
`OperatorVertex`?
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