[
https://issues.apache.org/jira/browse/BEAM-2930?focusedWorklogId=137867&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-137867
]
ASF GitHub Bot logged work on BEAM-2930:
----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Aug/18 15:58
Start Date: 24/Aug/18 15:58
Worklog Time Spent: 10m
Work Description: tweise commented on a change in pull request #6208:
[BEAM-2930] Side input support for Flink portable streaming.
URL: https://github.com/apache/beam/pull/6208#discussion_r212675593
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/functions/FlinkStreamingSideInputHandlerFactory.java
##########
@@ -0,0 +1,167 @@
+/*
+ * 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.beam.runners.flink.translation.functions;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.common.collect.ImmutableMap;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Map;
+import org.apache.beam.model.pipeline.v1.RunnerApi;
+import
org.apache.beam.model.pipeline.v1.RunnerApi.ExecutableStagePayload.SideInputId;
+import org.apache.beam.runners.core.construction.PTransformTranslation;
+import org.apache.beam.runners.core.construction.graph.ExecutableStage;
+import org.apache.beam.runners.core.construction.graph.SideInputReference;
+import org.apache.beam.runners.fnexecution.state.StateRequestHandler;
+import
org.apache.beam.runners.fnexecution.state.StateRequestHandlers.SideInputHandler;
+import
org.apache.beam.runners.fnexecution.state.StateRequestHandlers.SideInputHandlerFactory;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.coders.KvCoder;
+import org.apache.beam.sdk.transforms.Materializations;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.PCollectionView;
+
+/**
+ * {@link StateRequestHandler} that uses {@link
org.apache.beam.runners.core.SideInputHandler} to
+ * access the Flink broadcast state that represents side inputs.
+ */
+public class FlinkStreamingSideInputHandlerFactory implements
SideInputHandlerFactory {
+
+ // Map from side input id to global PCollection id.
+ private final Map<SideInputId, PCollectionView<?>> sideInputToCollection;
+ private final org.apache.beam.runners.core.SideInputHandler runnerHandler;
+
+ /**
+ * Creates a new state handler for the given stage. Note that this requires
a traversal of the
+ * stage itself, so this should only be called once per stage rather than
once per bundle.
+ */
+ public static FlinkStreamingSideInputHandlerFactory forStage(
+ ExecutableStage stage,
+ Map<SideInputId, PCollectionView<?>> viewMapping,
+ org.apache.beam.runners.core.SideInputHandler runnerHandler) {
+ ImmutableMap.Builder<SideInputId, PCollectionView<?>> sideInputBuilder =
ImmutableMap.builder();
+ for (SideInputReference sideInput : stage.getSideInputs()) {
+ SideInputId sideInputId =
+ SideInputId.newBuilder()
+ .setTransformId(sideInput.transform().getId())
+ .setLocalName(sideInput.localName())
+ .build();
+ sideInputBuilder.put(
+ sideInputId,
+ checkNotNull(
+ viewMapping.get(sideInputId),
+ "No side input for %s/%s",
+ sideInputId.getTransformId(),
+ sideInputId.getLocalName()));
+ }
+
+ FlinkStreamingSideInputHandlerFactory factory =
+ new FlinkStreamingSideInputHandlerFactory(sideInputBuilder.build(),
runnerHandler);
+ return factory;
+ }
+
+ private FlinkStreamingSideInputHandlerFactory(
+ Map<SideInputId, PCollectionView<?>> sideInputToCollection,
+ org.apache.beam.runners.core.SideInputHandler runnerHandler) {
+ this.sideInputToCollection = sideInputToCollection;
+ this.runnerHandler = runnerHandler;
+ }
+
+ @Override
+ public <T, V, W extends BoundedWindow> SideInputHandler<V, W> forSideInput(
+ String transformId,
+ String sideInputId,
+ RunnerApi.FunctionSpec accessPattern,
+ Coder<T> elementCoder,
+ Coder<W> windowCoder) {
+
+ PCollectionView collectionNode =
+ sideInputToCollection.get(
+
SideInputId.newBuilder().setTransformId(transformId).setLocalName(sideInputId).build());
+ checkArgument(collectionNode != null, "No side input for %s/%s",
transformId, sideInputId);
+
+ if
(PTransformTranslation.ITERABLE_SIDE_INPUT.equals(accessPattern.getUrn())) {
+ @SuppressWarnings("unchecked") // T == V
+ Coder<V> outputCoder = (Coder<V>) elementCoder;
+ return forIterableSideInput(collectionNode, outputCoder, windowCoder);
+ } else if
(PTransformTranslation.MULTIMAP_SIDE_INPUT.equals(accessPattern.getUrn())
+ ||
Materializations.MULTIMAP_MATERIALIZATION_URN.equals(accessPattern.getUrn())) {
+ // TODO: Remove non standard URN.
+ // Using non standard version of multimap urn as dataflow uses the non
standard urn.
+ @SuppressWarnings("unchecked") // T == KV<?, V>
+ KvCoder<?, V> kvCoder = (KvCoder<?, V>) elementCoder;
+ return forMultimapSideInput(
+ collectionNode, kvCoder.getKeyCoder(), kvCoder.getValueCoder(),
windowCoder);
+ } else {
+ throw new IllegalArgumentException(
+ String.format("Unknown side input access pattern: %s",
accessPattern));
+ }
+ }
+
+ private <T, W extends BoundedWindow> SideInputHandler<T, W>
forIterableSideInput(
+ PCollectionView<?> collection, Coder<T> elementCoder, Coder<W>
windowCoder) {
Review comment:
removed
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Issue Time Tracking
-------------------
Worklog Id: (was: 137867)
Time Spent: 6h 50m (was: 6h 40m)
> Flink support for portable side input
> -------------------------------------
>
> Key: BEAM-2930
> URL: https://issues.apache.org/jira/browse/BEAM-2930
> Project: Beam
> Issue Type: Sub-task
> Components: runner-flink
> Reporter: Henning Rohde
> Assignee: Thomas Weise
> Priority: Major
> Labels: portability
> Time Spent: 6h 50m
> Remaining Estimate: 0h
>
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