[
https://issues.apache.org/jira/browse/BEAM-6751?focusedWorklogId=208048&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-208048
]
ASF GitHub Bot logged work on BEAM-6751:
----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Mar/19 20:39
Start Date: 05/Mar/19 20:39
Worklog Time Spent: 10m
Work Description: kennknowles commented on pull request #7991:
[BEAM-6751] Add KafkaIO EOS support to Flink via @RequiresStableInput
URL: https://github.com/apache/beam/pull/7991#discussion_r262679754
##########
File path:
runners/flink/src/test/java/org/apache/beam/runners/flink/FlinkRequiresStableInputTest.java
##########
@@ -0,0 +1,276 @@
+/*
+ * 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;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.WritableByteChannel;
+import java.nio.charset.StandardCharsets;
+import java.util.Collections;
+import java.util.Date;
+import java.util.UUID;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.io.FileSystems;
+import org.apache.beam.sdk.io.fs.MatchResult;
+import org.apache.beam.sdk.io.fs.ResolveOptions;
+import org.apache.beam.sdk.io.fs.ResourceId;
+import org.apache.beam.sdk.options.PipelineOptions;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
+import org.apache.beam.sdk.testing.FileChecksumMatcher;
+import org.apache.beam.sdk.testing.SerializableMatchers;
+import org.apache.beam.sdk.transforms.Create;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.MapElements;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.transforms.SimpleFunction;
+import org.apache.beam.sdk.util.FilePatternMatchingShardedFile;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.configuration.CheckpointingOptions;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.RestOptions;
+import org.apache.flink.runtime.jobgraph.JobGraph;
+import org.apache.flink.runtime.jobgraph.JobStatus;
+import org.apache.flink.runtime.jobgraph.SavepointRestoreSettings;
+import org.apache.flink.runtime.minicluster.MiniCluster;
+import org.apache.flink.runtime.minicluster.MiniClusterConfiguration;
+import org.apache.flink.streaming.util.TestStreamEnvironment;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+/** Tests {@link org.apache.beam.sdk.transforms.DoFn.RequiresStableInput} with
Flink. */
+public class FlinkRequiresStableInputTest {
Review comment:
This looks hard to port to a generic `@ValidatesRunner` test in `ParDoTest`,
though that is where I'd love something to end up. We would need the right
pipeline options on the runner and a flag or some such to cause a failure
simulation. Just a thought as I read.
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Issue Time Tracking
-------------------
Worklog Id: (was: 208048)
Time Spent: 3h (was: 2h 50m)
> KafkaIO's EOS mode does not work with FlinkRunner
> -------------------------------------------------
>
> Key: BEAM-6751
> URL: https://issues.apache.org/jira/browse/BEAM-6751
> Project: Beam
> Issue Type: Bug
> Components: io-java-kafka, runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Fix For: 2.12.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> KafkaIO has a validation check which whitelists certain runners capable of
> provide exactly-once semantics:
> {noformat}
> if ("org.apache.beam.runners.direct.DirectRunner".equals(runner)
> || runner.startsWith("org.apache.beam.runners.dataflow.")
> || runner.startsWith("org.apache.beam.runners.spark.") {
> ...
> {noformat}
> The Flink supports exactly-once checkpointing but the Flink Runner can't
> utilize it in the way KafkaIO intends it.
> I think we should remove the check in favor of checking for translation of
> {{@RequiresStableInput}}. Changes to KafkaIO might have to be made to support
> EOS efficiently with the Flink Runner.
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