[
https://issues.apache.org/jira/browse/BEAM-3089?focusedWorklogId=145731&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-145731
]
ASF GitHub Bot logged work on BEAM-3089:
----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Sep/18 17:19
Start Date: 19/Sep/18 17:19
Worklog Time Spent: 10m
Work Description: tweise closed pull request #6426: [BEAM-3089] Fix
default values in FlinkPipelineOptions / Add tests
URL: https://github.com/apache/beam/pull/6426
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/runners/flink/src/main/java/org/apache/beam/runners/flink/DefaultParallelismFactory.java
b/runners/flink/src/main/java/org/apache/beam/runners/flink/DefaultParallelismFactory.java
deleted file mode 100644
index d448bed2333..00000000000
---
a/runners/flink/src/main/java/org/apache/beam/runners/flink/DefaultParallelismFactory.java
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * 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 org.apache.beam.sdk.options.DefaultValueFactory;
-import org.apache.beam.sdk.options.PipelineOptions;
-import org.apache.flink.configuration.ConfigConstants;
-import org.apache.flink.configuration.GlobalConfiguration;
-
-/**
- * {@link DefaultValueFactory} for getting a default value for the parallelism
option on {@link
- * FlinkPipelineOptions}.
- *
- * <p>This will return either the default value from {@link
GlobalConfiguration} or {@code 1}. A
- * valid {@link GlobalConfiguration} is only available if the program is
executed by the Flink run
- * scripts.
- */
-public class DefaultParallelismFactory implements DefaultValueFactory<Integer>
{
- @Override
- public Integer create(PipelineOptions options) {
- return GlobalConfiguration.loadConfiguration()
- .getInteger(ConfigConstants.DEFAULT_PARALLELISM_KEY, 1);
- }
-}
diff --git
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkExecutionEnvironments.java
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkExecutionEnvironments.java
index 4ace1eccc37..40a8d51ee40 100644
---
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkExecutionEnvironments.java
+++
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkExecutionEnvironments.java
@@ -17,12 +17,16 @@
*/
package org.apache.beam.runners.flink;
+import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Splitter;
import java.util.List;
+import javax.annotation.Nullable;
import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.api.java.CollectionEnvironment;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.CoreOptions;
+import org.apache.flink.configuration.GlobalConfiguration;
import org.apache.flink.configuration.RestOptions;
import org.apache.flink.runtime.state.StateBackend;
import org.apache.flink.streaming.api.TimeCharacteristic;
@@ -42,6 +46,12 @@
*/
public static ExecutionEnvironment createBatchExecutionEnvironment(
FlinkPipelineOptions options, List<String> filesToStage) {
+ return createBatchExecutionEnvironment(options, filesToStage, null);
+ }
+
+ @VisibleForTesting
+ static ExecutionEnvironment createBatchExecutionEnvironment(
+ FlinkPipelineOptions options, List<String> filesToStage, @Nullable
String confDir) {
LOG.info("Creating a Batch Execution Environment.");
@@ -71,9 +81,18 @@ public static ExecutionEnvironment
createBatchExecutionEnvironment(
if (options.getParallelism() != -1 && !(flinkBatchEnv instanceof
CollectionEnvironment)) {
flinkBatchEnv.setParallelism(options.getParallelism());
}
+ // Set the correct parallelism, required by UnboundedSourceWrapper to
generate consistent splits.
+ final int parallelism;
+ if (flinkBatchEnv instanceof CollectionEnvironment) {
+ parallelism = 1;
+ } else {
+ parallelism =
+ determineParallelism(options.getParallelism(),
flinkBatchEnv.getParallelism(), confDir);
+ }
+ flinkBatchEnv.setParallelism(parallelism);
// set parallelism in the options (required by some execution code)
- options.setParallelism(flinkBatchEnv.getParallelism());
+ options.setParallelism(parallelism);
if (options.getObjectReuse()) {
flinkBatchEnv.getConfig().enableObjectReuse();
@@ -93,6 +112,12 @@ public static ExecutionEnvironment
createBatchExecutionEnvironment(
*/
public static StreamExecutionEnvironment createStreamExecutionEnvironment(
FlinkPipelineOptions options, List<String> filesToStage) {
+ return createStreamExecutionEnvironment(options, filesToStage, null);
+ }
+
+ @VisibleForTesting
+ static StreamExecutionEnvironment createStreamExecutionEnvironment(
+ FlinkPipelineOptions options, List<String> filesToStage, @Nullable
String flinkConfigDir) {
LOG.info("Creating a Streaming Environment.");
@@ -119,13 +144,13 @@ public static StreamExecutionEnvironment
createStreamExecutionEnvironment(
flinkStreamEnv = StreamExecutionEnvironment.getExecutionEnvironment();
}
- // set the correct parallelism.
- if (options.getParallelism() != -1) {
- flinkStreamEnv.setParallelism(options.getParallelism());
- }
-
+ // Set the parallelism, required by UnboundedSourceWrapper to generate
consistent splits.
+ final int parallelism =
+ determineParallelism(
+ options.getParallelism(), flinkStreamEnv.getParallelism(),
flinkConfigDir);
+ flinkStreamEnv.setParallelism(parallelism);
// set parallelism in the options (required by some execution code)
- options.setParallelism(flinkStreamEnv.getParallelism());
+ options.setParallelism(parallelism);
if (options.getObjectReuse()) {
flinkStreamEnv.getConfig().enableObjectReuse();
@@ -156,9 +181,11 @@ public static StreamExecutionEnvironment
createStreamExecutionEnvironment(
throw new IllegalArgumentException("The checkpoint interval must be
positive");
}
flinkStreamEnv.enableCheckpointing(checkpointInterval,
options.getCheckpointingMode());
- flinkStreamEnv
- .getCheckpointConfig()
- .setCheckpointTimeout(options.getCheckpointTimeoutMillis());
+ if (options.getCheckpointTimeoutMillis() != -1) {
+ flinkStreamEnv
+ .getCheckpointConfig()
+ .setCheckpointTimeout(options.getCheckpointTimeoutMillis());
+ }
boolean externalizedCheckpoint =
options.isExternalizedCheckpointsEnabled();
boolean retainOnCancellation =
options.getRetainExternalizedCheckpointsOnCancellation();
if (externalizedCheckpoint) {
@@ -189,6 +216,35 @@ public static StreamExecutionEnvironment
createStreamExecutionEnvironment(
return flinkStreamEnv;
}
+ private static int determineParallelism(
+ final int pipelineOptionsParallelism,
+ final int envParallelism,
+ @Nullable String flinkConfDir) {
+ if (pipelineOptionsParallelism > 0) {
+ return pipelineOptionsParallelism;
+ }
+ if (envParallelism > 0) {
+ // If the user supplies a parallelism on the command-line, this is set
on the execution environment during creation
+ return envParallelism;
+ }
+
+ final Configuration configuration;
+ if (flinkConfDir == null) {
+ configuration = GlobalConfiguration.loadConfiguration();
+ } else {
+ configuration = GlobalConfiguration.loadConfiguration(flinkConfDir);
+ }
+ final int flinkConfigParallelism =
+ configuration.getInteger(CoreOptions.DEFAULT_PARALLELISM.key(), -1);
+ if (flinkConfigParallelism > 0) {
+ return flinkConfigParallelism;
+ }
+ LOG.warn(
+ "No default parallelism could be found. Defaulting to parallelism 1. "
+ + "Please set an explicit parallelism with --parallelism");
+ return 1;
+ }
+
private static void applyLatencyTrackingInterval(
ExecutionConfig config, FlinkPipelineOptions options) {
long latencyTrackingInterval = options.getLatencyTrackingInterval();
diff --git
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkJobInvoker.java
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkJobInvoker.java
index 5989a6675b4..d004a67588f 100644
---
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkJobInvoker.java
+++
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkJobInvoker.java
@@ -17,7 +17,6 @@
*/
package org.apache.beam.runners.flink;
-import static com.google.common.base.MoreObjects.firstNonNull;
import static
org.apache.beam.runners.core.construction.PipelineResources.detectClassPathResourcesToStage;
import com.google.common.util.concurrent.ListeningExecutorService;
@@ -38,7 +37,7 @@
public static FlinkJobInvoker create(
ListeningExecutorService executorService, String flinkMasterUrl) {
- return new FlinkJobInvoker(executorService, firstNonNull(flinkMasterUrl,
"[auto]"));
+ return new FlinkJobInvoker(executorService, flinkMasterUrl);
}
private final ListeningExecutorService executorService;
@@ -62,7 +61,7 @@ public JobInvocation invoke(
String.format("%s_%s", flinkOptions.getJobName(),
UUID.randomUUID().toString());
LOG.info("Invoking job {}", invocationId);
- flinkOptions.setFlinkMaster(firstNonNull(flinkOptions.getFlinkMaster(),
flinkMasterUrl));
+ flinkOptions.setFlinkMaster(flinkMasterUrl);
flinkOptions.setRunner(null);
diff --git
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkPipelineOptions.java
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkPipelineOptions.java
index 0db01448c4d..81b0e41bb5c 100644
---
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkPipelineOptions.java
+++
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkPipelineOptions.java
@@ -56,12 +56,15 @@
"Address of the Flink Master where the Pipeline should be executed. Can"
+ " either be of the form \"host:port\" or one of the special values
[local], "
+ "[collection] or [auto].")
+ @Default.String("[auto]")
String getFlinkMaster();
void setFlinkMaster(String value);
- @Description("The degree of parallelism to be used when distributing
operations onto workers.")
- @Default.InstanceFactory(DefaultParallelismFactory.class)
+ @Description(
+ "The degree of parallelism to be used when distributing operations onto
workers. "
+ + "If the parallelism is not set, the configured Flink default is
used, or 1 if none can be found.")
+ @Default.Integer(-1)
Integer getParallelism();
void setParallelism(Integer value);
@@ -75,13 +78,13 @@
void setCheckpointingInterval(Long interval);
@Description("The checkpointing mode that defines consistency guarantee.")
- @Default.Enum("AT_LEAST_ONCE")
+ @Default.Enum("EXACTLY_ONCE")
CheckpointingMode getCheckpointingMode();
void setCheckpointingMode(CheckpointingMode mode);
@Description("The maximum time that a checkpoint may take before being
discarded.")
- @Default.Long(20 * 60 * 1000)
+ @Default.Long(-1L)
Long getCheckpointTimeoutMillis();
void setCheckpointTimeoutMillis(Long checkpointTimeoutMillis);
diff --git
a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkRunner.java
b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkRunner.java
index 34f6479bbcb..8af87b23430 100644
--- a/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkRunner.java
+++ b/runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkRunner.java
@@ -83,11 +83,6 @@ public static FlinkRunner fromOptions(PipelineOptions
options) {
LOG.debug("Classpath elements: {}", flinkOptions.getFilesToStage());
}
- // Set Flink Master to [auto] if no option was specified.
- if (flinkOptions.getFlinkMaster() == null) {
- flinkOptions.setFlinkMaster("[auto]");
- }
-
return new FlinkRunner(flinkOptions);
}
diff --git
a/runners/flink/src/test/java/org/apache/beam/runners/flink/FlinkExecutionEnvironmentsTest.java
b/runners/flink/src/test/java/org/apache/beam/runners/flink/FlinkExecutionEnvironmentsTest.java
new file mode 100644
index 00000000000..2e4c06cdfec
--- /dev/null
+++
b/runners/flink/src/test/java/org/apache/beam/runners/flink/FlinkExecutionEnvironmentsTest.java
@@ -0,0 +1,162 @@
+/*
+ * 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.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.util.Collections;
+import org.apache.beam.sdk.options.PipelineOptionsFactory;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.streaming.api.environment.LocalStreamEnvironment;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+/** Tests for {@link FlinkExecutionEnvironments}. */
+public class FlinkExecutionEnvironmentsTest {
+
+ @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+ @Test
+ public void shouldSetParallelismBatch() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setParallelism(42);
+
+ ExecutionEnvironment bev =
+ FlinkExecutionEnvironments.createBatchExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(), is(42));
+ assertThat(bev.getParallelism(), is(42));
+ }
+
+ @Test
+ public void shouldSetParallelismStreaming() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setParallelism(42);
+
+ StreamExecutionEnvironment sev =
+ FlinkExecutionEnvironments.createStreamExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(), is(42));
+ assertThat(sev.getParallelism(), is(42));
+ }
+
+ @Test
+ public void shouldInferParallelismFromEnvironmentBatch() throws IOException {
+ String flinkConfDir = extractFlinkConfig();
+
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setFlinkMaster("host:80");
+
+ ExecutionEnvironment bev =
+ FlinkExecutionEnvironments.createBatchExecutionEnvironment(
+ options, Collections.emptyList(), flinkConfDir);
+
+ assertThat(options.getParallelism(), is(23));
+ assertThat(bev.getParallelism(), is(23));
+ }
+
+ @Test
+ public void shouldInferParallelismFromEnvironmentStreaming() throws
IOException {
+ String flinkConfDir = extractFlinkConfig();
+
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setFlinkMaster("host:80");
+
+ StreamExecutionEnvironment sev =
+ FlinkExecutionEnvironments.createStreamExecutionEnvironment(
+ options, Collections.emptyList(), flinkConfDir);
+
+ assertThat(options.getParallelism(), is(23));
+ assertThat(sev.getParallelism(), is(23));
+ }
+
+ @Test
+ public void shouldFallbackToDefaultParallelismBatch() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setFlinkMaster("host:80");
+
+ ExecutionEnvironment bev =
+ FlinkExecutionEnvironments.createBatchExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(), is(1));
+ assertThat(bev.getParallelism(), is(1));
+ }
+
+ @Test
+ public void shouldFallbackToDefaultParallelismStreaming() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+ options.setFlinkMaster("host:80");
+
+ StreamExecutionEnvironment sev =
+ FlinkExecutionEnvironments.createStreamExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(), is(1));
+ assertThat(sev.getParallelism(), is(1));
+ }
+
+ @Test
+ public void useDefaultParallelismFromContextBatch() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+
+ ExecutionEnvironment bev =
+ FlinkExecutionEnvironments.createBatchExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(),
is(LocalStreamEnvironment.getDefaultLocalParallelism()));
+ assertThat(bev.getParallelism(),
is(LocalStreamEnvironment.getDefaultLocalParallelism()));
+ }
+
+ @Test
+ public void useDefaultParallelismFromContextStreaming() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ options.setRunner(TestFlinkRunner.class);
+
+ StreamExecutionEnvironment sev =
+ FlinkExecutionEnvironments.createStreamExecutionEnvironment(
+ options, Collections.emptyList());
+
+ assertThat(options.getParallelism(),
is(LocalStreamEnvironment.getDefaultLocalParallelism()));
+ assertThat(sev.getParallelism(),
is(LocalStreamEnvironment.getDefaultLocalParallelism()));
+ }
+
+ private String extractFlinkConfig() throws IOException {
+ InputStream inputStream =
getClass().getResourceAsStream("/flink-conf.yaml");
+ File root = temporaryFolder.getRoot();
+ Files.copy(inputStream, new File(root, "flink-conf.yaml").toPath());
+ return root.getAbsolutePath();
+ }
+}
diff --git
a/runners/flink/src/test/java/org/apache/beam/runners/flink/PipelineOptionsTest.java
b/runners/flink/src/test/java/org/apache/beam/runners/flink/PipelineOptionsTest.java
index 2edf3c73d1e..49cdbe83f93 100644
---
a/runners/flink/src/test/java/org/apache/beam/runners/flink/PipelineOptionsTest.java
+++
b/runners/flink/src/test/java/org/apache/beam/runners/flink/PipelineOptionsTest.java
@@ -17,6 +17,10 @@
*/
package org.apache.beam.runners.flink;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+import static org.hamcrest.core.IsNull.nullValue;
+
import java.util.Collections;
import java.util.HashMap;
import
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator;
@@ -36,6 +40,7 @@
import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.api.common.typeinfo.TypeHint;
import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.streaming.api.CheckpointingMode;
import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
import org.apache.flink.streaming.util.OneInputStreamOperatorTestHarness;
import org.joda.time.Instant;
@@ -59,6 +64,28 @@
private static MyOptions options =
PipelineOptionsFactory.fromArgs("--testOption=nothing").as(MyOptions.class);
+ /** These defaults should only be changed with a very good reason. */
+ @Test
+ public void testDefaults() {
+ FlinkPipelineOptions options =
PipelineOptionsFactory.as(FlinkPipelineOptions.class);
+ assertThat(options.getParallelism(), is(-1));
+ assertThat(options.getFlinkMaster(), is("[auto]"));
+ assertThat(options.getFilesToStage(), is(nullValue()));
+ assertThat(options.getLatencyTrackingInterval(), is(0L));
+ assertThat(options.isShutdownSourcesOnFinalWatermark(), is(false));
+ assertThat(options.getObjectReuse(), is(false));
+ assertThat(options.getCheckpointingMode(),
is(CheckpointingMode.EXACTLY_ONCE));
+ assertThat(options.getMinPauseBetweenCheckpoints(), is(-1L));
+ assertThat(options.getCheckpointingInterval(), is(-1L));
+ assertThat(options.getCheckpointTimeoutMillis(), is(-1L));
+ assertThat(options.getNumberOfExecutionRetries(), is(-1));
+ assertThat(options.getExecutionRetryDelay(), is(-1L));
+ assertThat(options.getRetainExternalizedCheckpointsOnCancellation(),
is(false));
+ assertThat(options.getStateBackend(), is(nullValue()));
+ assertThat(options.getMaxBundleSize(), is(1000L));
+ assertThat(options.getMaxBundleTimeMills(), is(1000L));
+ }
+
@Test(expected = Exception.class)
public void parDoBaseClassPipelineOptionsNullTest() {
TupleTag<String> mainTag = new TupleTag<>("main-output");
diff --git
a/runners/flink/src/test/java/org/apache/beam/runners/flink/streaming/GroupByNullKeyTest.java
b/runners/flink/src/test/java/org/apache/beam/runners/flink/streaming/GroupByNullKeyTest.java
index 66600193f0b..17d803d193a 100644
---
a/runners/flink/src/test/java/org/apache/beam/runners/flink/streaming/GroupByNullKeyTest.java
+++
b/runners/flink/src/test/java/org/apache/beam/runners/flink/streaming/GroupByNullKeyTest.java
@@ -21,6 +21,7 @@
import java.io.File;
import java.io.Serializable;
import java.util.Arrays;
+import org.apache.beam.runners.flink.FlinkPipelineOptions;
import org.apache.beam.runners.flink.FlinkTestPipeline;
import org.apache.beam.sdk.Pipeline;
import org.apache.beam.sdk.io.TextIO;
@@ -85,6 +86,7 @@ public void processElement(ProcessContext c) {
public void testProgram() throws Exception {
Pipeline p = FlinkTestPipeline.createForStreaming();
+ p.getOptions().as(FlinkPipelineOptions.class).setParallelism(1);
PCollection<String> output =
p.apply(
diff --git a/runners/flink/src/test/resources/flink-conf.yaml
b/runners/flink/src/test/resources/flink-conf.yaml
new file mode 100644
index 00000000000..54a03c99a7f
--- /dev/null
+++ b/runners/flink/src/test/resources/flink-conf.yaml
@@ -0,0 +1,19 @@
+# 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.
+#
+
+parallelism.default: 23
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Issue Time Tracking
-------------------
Worklog Id: (was: 145731)
Time Spent: 2h 50m (was: 2h 40m)
> Issue with setting the parallelism at client level using Flink runner
> ---------------------------------------------------------------------
>
> Key: BEAM-3089
> URL: https://issues.apache.org/jira/browse/BEAM-3089
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.0.0
> Environment: I am using Flink 1.2.1 running on Docker, with Task
> Managers distributed across different VMs as part of a Docker Swarm.
> Reporter: Thalita Vergilio
> Assignee: Grzegorz KoĊakowski
> Priority: Major
> Labels: docker, flink, parallel-deployment
> Fix For: 2.8.0
>
> Attachments: flink-ui-parallelism.png
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> When uploading an Apache Beam application using the Flink Web UI, the
> parallelism set at job submission doesn't get picked up. The same happens
> when submitting a job using the Flink CLI.
> In both cases, the parallelism ends up defaulting to 1.
> When I set the parallelism programmatically within the Apache Beam code, it
> works: {{flinkPipelineOptions.setParallelism(4);}}
> I suspect the root of the problem may be in the
> org.apache.beam.runners.flink.DefaultParallelismFactory class, as it checks
> for Flink's GlobalConfiguration, which may not pick up runtime values passed
> to Flink, then defaults to 1 if it doesn't find anything.
> Any ideas on how this could be fixed or worked around? I need to be able to
> change the parallelism dynamically, so the programmatic approach won't really
> work for me, nor will setting the Flink configuration at system level.
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