[
https://issues.apache.org/jira/browse/BEAM-4285?focusedWorklogId=113409&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-113409
]
ASF GitHub Bot logged work on BEAM-4285:
----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Jun/18 22:14
Start Date: 19/Jun/18 22:14
Worklog Time Spent: 10m
Work Description: jkff commented on a change in pull request #5688:
[BEAM-4285] Implement Flink batch side input handler
URL: https://github.com/apache/beam/pull/5688#discussion_r196594928
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/functions/FlinkBatchSideInputHandlerFactory.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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 com.google.auto.value.AutoValue;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableMultimap;
+import com.google.common.collect.Multimap;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.Nullable;
+import
org.apache.beam.model.pipeline.v1.RunnerApi.ExecutableStagePayload.SideInputId;
+import org.apache.beam.runners.core.construction.graph.ExecutableStage;
+import
org.apache.beam.runners.core.construction.graph.PipelineNode.PCollectionNode;
+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.MultimapSideInputHandler;
+import
org.apache.beam.runners.fnexecution.state.StateRequestHandlers.MultimapSideInputHandlerFactory;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.values.KV;
+import org.apache.flink.api.common.functions.RuntimeContext;
+
+/**
+ * {@link StateRequestHandler} that uses a Flink {@link RuntimeContext} to
access Flink broadcast
+ * variable that represent side inputs.
+ */
+class FlinkBatchSideInputHandlerFactory implements
MultimapSideInputHandlerFactory {
+
+ // Map from side input id to global PCollection id.
+ private final Map<SideInputId, PCollectionNode> sideInputToCollection;
+ private final RuntimeContext runtimeContext;
+
+ /**
+ * 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.
+ */
+ static FlinkBatchSideInputHandlerFactory forStage(
+ ExecutableStage stage, RuntimeContext runtimeContext) {
+ ImmutableMap.Builder<SideInputId, PCollectionNode> sideInputBuilder =
ImmutableMap.builder();
+ for (SideInputReference sideInput : stage.getSideInputs()) {
+ sideInputBuilder.put(
+ SideInputId.newBuilder()
+ .setTransformId(sideInput.transform().getId())
+ .setLocalName(sideInput.localName())
+ .build(),
+ sideInput.collection());
+ }
+ return new FlinkBatchSideInputHandlerFactory(sideInputBuilder.build(),
runtimeContext);
+ }
+
+ private FlinkBatchSideInputHandlerFactory(
+ Map<SideInputId, PCollectionNode> sideInputToCollection, RuntimeContext
runtimeContext) {
+ this.sideInputToCollection = sideInputToCollection;
+ this.runtimeContext = runtimeContext;
+ }
+
+ @Override
+ public <K, V, W extends BoundedWindow> MultimapSideInputHandler<K, V, W>
forSideInput(
+ String transformId,
+ String sideInputId,
+ Coder<K> keyCoder,
+ Coder<V> valueCoder,
+ Coder<W> windowCoder) {
+ PCollectionNode collectionNode =
+ sideInputToCollection.get(
+
SideInputId.newBuilder().setTransformId(transformId).setLocalName(sideInputId).build());
+ checkArgument(collectionNode != null, "No side input for %s/%s",
transformId, sideInputId);
+ List<Object> broadcastVariable =
runtimeContext.getBroadcastVariable(collectionNode.getId());
Review comment:
Can this be a `List<WindowedValue<KV<K, V>>>`?
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Issue Time Tracking
-------------------
Worklog Id: (was: 113409)
Time Spent: 1h (was: 50m)
> Flink batch state request handler
> ---------------------------------
>
> Key: BEAM-4285
> URL: https://issues.apache.org/jira/browse/BEAM-4285
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Ben Sidhom
> Assignee: Ben Sidhom
> Priority: Major
> Time Spent: 1h
> Remaining Estimate: 0h
>
> In order to support side inputs Flink needs a state service request handler.
> As in the non-portable we can start by handling batch side inputs by Flink
> broadcast variables.
> [https://github.com/bsidhom/beam/blob/41de3bce60f1ebc9211f299612a20d8e561f9b6f/runners/flink/src/main/java/org/apache/beam/runners/flink/translation/functions/FlinkBatchStateRequestHandler.java]
> or
> [https://github.com/bsidhom/beam/blob/41de3bce60f1ebc9211f299612a20d8e561f9b6f/runners/flink/src/main/java/org/apache/beam/runners/flink/translation/functions/FlinkBatchStateRequestHandler.java]
> can be used as a starting point.
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