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Subject [GitHub] [beam] Ardagan commented on a change in pull request #10949: [BEAM-9371] Add SideInputLoadTest to Java SDK
Date Mon, 02 Mar 2020 14:48:04 GMT
Ardagan commented on a change in pull request #10949: [BEAM-9371] Add SideInputLoadTest to
Java SDK
URL: https://github.com/apache/beam/pull/10949#discussion_r386434528
 
 

 ##########
 File path: sdks/java/testing/load-tests/src/main/java/org/apache/beam/sdk/loadtests/SideInputLoadTest.java
 ##########
 @@ -0,0 +1,243 @@
+/*
+ * 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.sdk.loadtests;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Random;
+import org.apache.beam.sdk.io.synthetic.SyntheticStep;
+import org.apache.beam.sdk.options.Default;
+import org.apache.beam.sdk.options.Description;
+import org.apache.beam.sdk.options.Validation;
+import org.apache.beam.sdk.testutils.metrics.ByteMonitor;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.transforms.View;
+import org.apache.beam.sdk.transforms.windowing.FixedWindows;
+import org.apache.beam.sdk.transforms.windowing.Window;
+import org.apache.beam.sdk.values.KV;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionView;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+
+/**
+ * Load test for operations involving side inputs.
+ *
+ * <p>The purpose of this test is to measure cost of materialization or lookup of side
inputs. It
+ * uses synthetic sources and {@link SyntheticStep} which can be parametrized to generate
records
+ * with various sizes of keys and values, impose delays in the pipeline and simulate other
+ * performance challenges.
+ *
+ * <p>To run the test manually, use the following command:
+ *
+ * <pre>
+ *   ./gradlew :sdks:java:testing:load-tests:run -PloadTest.args='
+ *    --sourceOptions={"numRecords":2000, ...}
+ *    --sideInputType=ITERABLE
+ *    --accessPercentage=1
+ *    --windowCount=200
+ * </pre>
+ */
+public class SideInputLoadTest extends LoadTest<SideInputLoadTest.Options> {
+
+  private static final String METRICS_NAMESPACE = "sideinput";
+  private static final Instant TIME = new Instant();
+
+  public SideInputLoadTest(String[] args) throws IOException {
+    super(args, Options.class, METRICS_NAMESPACE);
+  }
+
+  @Override
+  void loadTest() throws IOException {
+    Optional<SyntheticStep> syntheticStep = createStep(options.getStepOptions());
+    PCollection<KV<byte[], byte[]>> input =
+        pipeline
+            .apply(readFromSource(sourceOptions))
+            .apply(ParDo.of(new AddTimestamps()))
+            .apply("Collect start time metrics", ParDo.of(runtimeMonitor))
+            .apply(ParDo.of(new ByteMonitor(METRICS_NAMESPACE, "totalBytes.count")));
+
+    performTestWithSideInput(
+        input, SideInputMaterializationType.valueOf(options.getSideInputType()), syntheticStep);
+  }
+
+  private void performTestWithSideInput(
+      PCollection<KV<byte[], byte[]>> input,
+      SideInputMaterializationType sideInputType,
+      Optional<SyntheticStep> syntheticStep) {
+    switch (sideInputType) {
+      case ITERABLE:
+        performTestWithIterable(input, syntheticStep);
+        break;
+      case HASHMAP:
+        performTestWithHashMap(input, syntheticStep);
+        break;
+      case LIST:
+        performTestWithList(input, syntheticStep);
+        break;
+    }
+  }
+
+  private void performTestWithList(
+      PCollection<KV<byte[], byte[]>> input, Optional<SyntheticStep> syntheticStep)
{
+    applyStepIfPresent(input, "Synthetic step", syntheticStep);
+    PCollectionView<List<KV<byte[], byte[]>>> sideInput = input.apply(View.asList());
+    input
+        .apply(ParDo.of(new SideInputTestWithList(sideInput)).withSideInputs(sideInput))
+        .apply("Collect end time metrics", ParDo.of(runtimeMonitor));
+  }
+
+  private void performTestWithHashMap(
+      PCollection<KV<byte[], byte[]>> input, Optional<SyntheticStep> syntheticStep)
{
+    applyStepIfPresent(input, "Synthetic step", syntheticStep);
+    PCollectionView<Map<byte[], byte[]>> sideInput = input.apply(View.asMap());
+    input
+        .apply(ParDo.of(new SideInputTestWithHashMap(sideInput)).withSideInputs(sideInput))
+        .apply("Collect end time metrics", ParDo.of(runtimeMonitor));
+  }
+
+  private void performTestWithIterable(
+      PCollection<KV<byte[], byte[]>> input, Optional<SyntheticStep> syntheticStep)
{
+    applyStepIfPresent(input, "Synthetic step", syntheticStep);
+    PCollectionView<Iterable<KV<byte[], byte[]>>> sideInput;
+    if (options.getWindowCount() != 0) {
+      long windowDurationMilis = sourceOptions.numRecords / options.getWindowCount();
 
 Review comment:
   Is there a specific reason we do windowing only for iterable case?

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