Issue 3495: Split metadata scalability test into two separate tests (p…

…ravega#3496)

* Splits metadata scalability test into two separate tests so that they are individually not resource hungry and test intended scenarios.

Signed-off-by: Shivesh Ranjan <[email protected]>

controller/src/main/java/io/pravega/controller/util/Config.java

@@ -139,7 +139,7 @@ public final class Config {
     private static final Property<String> PROPERTY_TLS_TRUST_STORE = Property.named("auth.tlsTrustStore", "");
     private static final Property<String> PROPERTY_TLS_KEY_FILE = Property.named("auth.tlsKeyFile", "");
     private static final Property<String> PROPERTY_TOKEN_SIGNING_KEY = Property.named("auth.tokenSigningKey", "");
-    private static final Property<String> PROPERTY_ZK_URL = Property.named("zk.url", "localhost:2121");
+    private static final Property<String> PROPERTY_ZK_URL = Property.named("zk.url", "localhost:2181");
     private static final Property<Integer> PROPERTY_ZK_RETRY_MILLIS = Property.named("zk.retryIntervalMillis", 5000);
     private static final Property<Integer> PROPERTY_ZK_MAX_RETRY_COUNT = Property.named("maxRetries", 5);
     private static final Property<Integer> PROPERTY_ZK_SESSION_TIMEOUT_MILLIS = Property.named("sessionTimeoutMillis", 10000);

test/system/src/test/java/io/pravega/test/system/MetadataScalabilityLargeNumSegmentsTest.java

@@ -0,0 +1,89 @@
+/**
+ * Copyright (c) 2017 Dell Inc., or its subsidiaries. All Rights Reserved.
+ *
+ * Licensed 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
+ */
+package io.pravega.test.system;
+
+import io.pravega.client.segment.impl.Segment;
+import io.pravega.client.stream.ScalingPolicy;
+import io.pravega.client.stream.StreamConfiguration;
+import io.pravega.client.stream.impl.ControllerImpl;
+import io.pravega.shared.segment.StreamSegmentNameUtils;
+import io.pravega.test.system.framework.SystemTestRunner;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.commons.lang3.tuple.Pair;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+
+/**
+ * This test creates a stream with 10k segments and then rapidly scales it 10 times.
+ * Then it performs truncation a random number of times.
+ */
+@Slf4j
+@RunWith(SystemTestRunner.class)
+public class MetadataScalabilityLargeNumSegmentsTest extends MetadataScalabilityTest {
+    private static final String STREAM_NAME = "metadataScalabilitySegments";
+    private static final int NUM_SEGMENTS = 10000;
+    private static final StreamConfiguration CONFIG = StreamConfiguration.builder()
+                                                                         .scalingPolicy(ScalingPolicy.fixed(NUM_SEGMENTS)).build();
+    private static final int SCALES_TO_PERFORM = 10;
+
+    private final AtomicInteger counter = new AtomicInteger(0);
+
+    @Override
+    String getStreamName() {
+        return STREAM_NAME;
+    }
+
+    @Override
+    StreamConfiguration getStreamConfig() {
+        return CONFIG;
+    }
+
+    @Override
+    int getScalesToPerform() {
+        return SCALES_TO_PERFORM;
+    }
+
+    /**
+     * Chooses one segment out of the current segments and selects its matching range as the input for next scale.
+     * @param sortedCurrentSegments sorted current segments
+     * @return scale input for next scale
+     */
+    Pair<List<Long>, Map<Double, Double>> getScaleInput(ArrayList<Segment> sortedCurrentSegments) {
+        int i = counter.incrementAndGet();
+        List<Long> segmentsToSeal = sortedCurrentSegments.stream()
+                                          .filter(x -> i - 1 == StreamSegmentNameUtils.getSegmentNumber(x.getSegmentId()) % NUM_SEGMENTS)
+                                          .map(Segment::getSegmentId).collect(Collectors.toList());
+        Map<Double, Double> newRanges = new HashMap<>();
+        double delta = 1.0 / NUM_SEGMENTS;
+        newRanges.put(delta * (i - 1), delta * i);
+
+        return new ImmutablePair<>(segmentsToSeal, newRanges);
+    }
+
+    @Test
+    public void largeNumSegmentsScalability() {
+        testState = new TestState(false);
+
+        ControllerImpl controller = getController();
+
+        List<List<Segment>> listOfEpochs = scale(controller);
+        // TODO: uncomment truncation as part of #3478
+        // truncation(controller, listOfEpochs);
+        sealAndDeleteStream(controller);
+    }
+}

test/system/src/test/java/io/pravega/test/system/MetadataScalabilityLargeScalesTest.java

@@ -0,0 +1,98 @@
+/**
+ * Copyright (c) 2017 Dell Inc., or its subsidiaries. All Rights Reserved.
+ *
+ * Licensed 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
+ */
+package io.pravega.test.system;
+
+import io.pravega.client.segment.impl.Segment;
+import io.pravega.client.stream.ScalingPolicy;
+import io.pravega.client.stream.StreamConfiguration;
+import io.pravega.client.stream.impl.ControllerImpl;
+import io.pravega.test.system.framework.SystemTestRunner;
+import lombok.Synchronized;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.commons.lang3.tuple.Pair;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * This test creates a stream with 10 segments and then rapidly scales it 1010 times.
+ * Then it performs truncation a random number of times.
+ */
+@Slf4j
+@RunWith(SystemTestRunner.class)
+public class MetadataScalabilityLargeScalesTest extends MetadataScalabilityTest {
+    private static final String STREAM_NAME = "metadataScalabilityScale";
+    private static final int NUM_SEGMENTS = 10;
+    private static final StreamConfiguration CONFIG = StreamConfiguration.builder()
+                                                                         .scalingPolicy(ScalingPolicy.fixed(NUM_SEGMENTS)).build();
+    private static final int SCALES_TO_PERFORM = 1010;
+
+    private final Map<Double, Double> newRanges = new HashMap<>();
+
+    @Override
+    String getStreamName() {
+        return STREAM_NAME;
+    }
+
+    @Override
+    StreamConfiguration getStreamConfig() {
+        return CONFIG;
+    }
+
+    @Override
+    int getScalesToPerform() {
+        return SCALES_TO_PERFORM;
+    }
+
+    /**
+     * Scale all the segments in the current epoch and replace them with new identical 10 segments. 
+     * @param sortedCurrentSegments segments in current epoch
+     * @return scale input for next scale to perform
+     */
+    Pair<List<Long>, Map<Double, Double>> getScaleInput(ArrayList<Segment> sortedCurrentSegments) {
+        return new ImmutablePair<>(getSegmentsToSeal(sortedCurrentSegments), getNewRanges());     
+    }
+
+    private List<Long> getSegmentsToSeal(ArrayList<Segment> sorted) {
+        return sorted.stream()
+                     .map(Segment::getSegmentId).collect(Collectors.toList());
+    }
+
+    @Synchronized
+    private Map<Double, Double> getNewRanges() {
+        if (newRanges.isEmpty()) {
+            double delta = 1.0 / NUM_SEGMENTS;
+            for (int i = 0; i < NUM_SEGMENTS; i++) {
+                double low = delta * i;
+                double high = i == NUM_SEGMENTS - 1 ? 1.0 : delta * (i + 1);
+
+                newRanges.put(low, high);
+            }
+        }
+        return newRanges;
+    }
+
+    @Test
+    public void largeNumScalesScalability() {
+        testState = new TestState(false);
+
+        ControllerImpl controller = getController();
+
+        List<List<Segment>> listOfEpochs = scale(controller);
+        truncation(controller, listOfEpochs);
+        sealAndDeleteStream(controller);
+    }
+}