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@@ -0,0 +1,408 @@
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+/**
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package org.apache.hadoop.fs.azurebfs.services;
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+
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+import java.net.URL;
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+import java.time.Duration;
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+import java.time.Instant;
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.concurrent.Callable;
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+import java.util.concurrent.ExecutorService;
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+import java.util.concurrent.Executors;
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+import java.util.concurrent.Future;
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+
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+import org.junit.After;
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+import org.junit.Before;
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+import org.junit.Test;
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+import org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+
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+import static org.assertj.core.api.Assertions.assertThat;
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+
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+/**
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+ * Test the latency tracker for ABFS.
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+ *
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+ */
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+public final class TestAbfsPerfTracker {
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+ private static final Logger LOG = LoggerFactory.getLogger(TestAbfsPerfTracker.class);
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+ private static ExecutorService executorService = null;
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+ private static final int TEST_AGGREGATE_COUNT = 42;
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+ private final String filesystemName = "bogusFilesystemName";
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+ private final String accountName = "bogusAccountName";
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+ private final URL url;
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+
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+ public TestAbfsPerfTracker() throws Exception {
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+ this.url = new URL("http", "www.microsoft.com", "/bogusFile");
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+ }
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+
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+ @Before
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+ public void setUp() throws Exception {
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+ executorService = Executors.newCachedThreadPool();
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+ }
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+
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+ @After
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+ public void tearDown() throws Exception {
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+ executorService.shutdown();
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+ }
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+
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+ @Test
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+ public void verifyDisablingOfTracker() throws Exception {
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+ // verify that disabling of the tracker works
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, false);
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+
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+ String latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should be empty").isNull();
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+
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "disablingCaller",
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+ "disablingCallee")) {
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+ AbfsHttpOperation op = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+ tracker.registerResult(op).registerSuccess(true);
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+ }
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+
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+ latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should return no record").isNull();
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+ }
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+
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+ @Test
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+ public void verifyTrackingForSingletonLatencyRecords() throws Exception {
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+ // verify that tracking for singleton latency records works as expected
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+ final int numTasks = 100;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, true);
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+
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+ String latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should be empty").isNull();
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+
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+ List<Callable<Integer>> tasks = new ArrayList<>();
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+ AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true);
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+ return 0;
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+ }
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+ });
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+ }
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+
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+ for (Future<Integer> fr: executorService.invokeAll(tasks)) {
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+ fr.get();
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+ }
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should return non-null record").isNotNull();
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+ assertThat(latencyDetails).describedAs("Latency record should be in the correct format")
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+ .containsPattern("h=[^ ]* t=[^ ]* a=bogusFilesystemName c=bogusAccountName cr=oneOperationCaller"
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+ + " ce=oneOperationCallee r=Succeeded l=[0-9]+ s=0 e= ci=[^ ]* ri=[^ ]* bs=0 br=0 m=GET"
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+ + " u=http%3A%2F%2Fwww.microsoft.com%2FbogusFile");
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+ }
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+
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+ latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should return no record").isNull();
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+ }
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+
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+ @Test
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+ public void verifyTrackingForAggregateLatencyRecords() throws Exception {
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+ // verify that tracking of aggregate latency records works as expected
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+ final int numTasks = 100;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, true);
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+
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+ String latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should be empty").isNull();
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+
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+ List<Callable<Integer>> tasks = new ArrayList<>();
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+ AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true)
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+ .registerAggregates(Instant.now(), TEST_AGGREGATE_COUNT);
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+ return 0;
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+ }
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+ });
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+ }
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+
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+ for (Future<Integer> fr: executorService.invokeAll(tasks)) {
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+ fr.get();
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+ }
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should return non-null record").isNotNull();
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+ assertThat(latencyDetails).describedAs("Latency record should be in the correct format")
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+ .containsPattern("h=[^ ]* t=[^ ]* a=bogusFilesystemName c=bogusAccountName cr=oneOperationCaller"
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+ + " ce=oneOperationCallee r=Succeeded l=[0-9]+ ls=[0-9]+ lc=" + TEST_AGGREGATE_COUNT
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+ + " s=0 e= ci=[^ ]* ri=[^ ]* bs=0 br=0 m=GET u=http%3A%2F%2Fwww.microsoft.com%2FbogusFile");
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+ }
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+
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+ latencyDetails = abfsPerfTracker.getClientLatency();
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+ assertThat(latencyDetails).describedAs("AbfsPerfTracker should return no record").isNull();
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+ }
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+
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+ @Test
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+ public void verifyRecordingSingletonLatencyIsCheapWhenDisabled() throws Exception {
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+ // when latency tracker is disabled, we expect it to take time equivalent to checking a boolean value
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+ final double maxLatencyWhenDisabledMs = 1000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, false);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startRecord = Instant.now();
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+
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true);
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+ }
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+
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+ long latencyRecord = Duration.between(startRecord, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in recording latency.", latencyRecord);
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+ return latencyRecord;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for recording singleton latencies should be bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyRecordingAggregateLatencyIsCheapWhenDisabled() throws Exception {
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+ // when latency tracker is disabled, we expect it to take time equivalent to checking a boolean value
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+ final double maxLatencyWhenDisabledMs = 1000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, false);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startRecord = Instant.now();
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+
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true)
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+ .registerAggregates(startRecord, TEST_AGGREGATE_COUNT);
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+ }
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+
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+ long latencyRecord = Duration.between(startRecord, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in recording latency.", latencyRecord);
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+ return latencyRecord;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for recording aggregate latencies should be bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyGettingLatencyRecordsIsCheapWhenDisabled() throws Exception {
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+ // when latency tracker is disabled, we expect it to take time equivalent to checking a boolean value
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+ final double maxLatencyWhenDisabledMs = 1000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, false);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startGet = Instant.now();
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+ abfsPerfTracker.getClientLatency();
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+ long latencyGet = Duration.between(startGet, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in retrieving latency record.", latencyGet);
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+ return latencyGet;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for getting latency records should be bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyRecordingSingletonLatencyIsCheapWhenEnabled() throws Exception {
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+ final double maxLatencyWhenDisabledMs = 5000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, true);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startRecord = Instant.now();
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+
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true);
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+ }
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+
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+ long latencyRecord = Duration.between(startRecord, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in recording latency.", latencyRecord);
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+ return latencyRecord;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for recording singleton latencies should be bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyRecordingAggregateLatencyIsCheapWhenEnabled() throws Exception {
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+ final double maxLatencyWhenDisabledMs = 5000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, true);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<>());
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startRecord = Instant.now();
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+
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+ try (AbfsPerfInfo tracker = new AbfsPerfInfo(abfsPerfTracker, "oneOperationCaller",
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+ "oneOperationCallee")) {
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+ tracker.registerResult(httpOperation).registerSuccess(true).
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+ registerAggregates(startRecord, TEST_AGGREGATE_COUNT);
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+ }
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+
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+ long latencyRecord = Duration.between(startRecord, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in recording latency.", latencyRecord);
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+ return latencyRecord;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for recording aggregate latencies is bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyGettingLatencyRecordsIsCheapWhenEnabled() throws Exception {
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+ final double maxLatencyWhenDisabledMs = 5000;
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+ final double minLatencyWhenDisabledMs = 0;
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+ final long numTasks = 1000;
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+ long aggregateLatency = 0;
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+ AbfsPerfTracker abfsPerfTracker = new AbfsPerfTracker(accountName, filesystemName, true);
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+ List<Callable<Long>> tasks = new ArrayList<>();
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+
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+ for (int i = 0; i < numTasks; i++) {
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+ tasks.add(() -> {
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+ Instant startRecord = Instant.now();
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+ abfsPerfTracker.getClientLatency();
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+ long latencyRecord = Duration.between(startRecord, Instant.now()).toMillis();
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+ LOG.debug("Spent {} ms in recording latency.", latencyRecord);
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+ return latencyRecord;
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+ });
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+ }
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+
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+ for (Future<Long> fr: executorService.invokeAll(tasks)) {
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+ aggregateLatency += fr.get();
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+ }
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+
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+ double averageRecordLatency = aggregateLatency / numTasks;
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+ assertThat(averageRecordLatency).describedAs("Average time for getting latency records should be bounded")
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+ .isBetween(minLatencyWhenDisabledMs, maxLatencyWhenDisabledMs);
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+ }
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+
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+ @Test
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+ public void verifyNoExceptionOnInvalidInput() throws Exception {
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+ Instant testInstant = Instant.now();
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+ AbfsPerfTracker abfsPerfTrackerDisabled = new AbfsPerfTracker(accountName, filesystemName, false);
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+ AbfsPerfTracker abfsPerfTrackerEnabled = new AbfsPerfTracker(accountName, filesystemName, true);
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<AbfsHttpHeader>());
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+
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+ verifyNoException(abfsPerfTrackerDisabled);
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+ verifyNoException(abfsPerfTrackerEnabled);
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+ }
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+
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+ private void verifyNoException(AbfsPerfTracker abfsPerfTracker) throws Exception {
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+ Instant testInstant = Instant.now();
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+ final AbfsHttpOperation httpOperation = new AbfsHttpOperation(url, "GET", new ArrayList<AbfsHttpHeader>());
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+
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+ try (
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+ AbfsPerfInfo tracker01 = new AbfsPerfInfo(abfsPerfTracker, null, null);
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+ AbfsPerfInfo tracker02 = new AbfsPerfInfo(abfsPerfTracker, "test", null);
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+ AbfsPerfInfo tracker03 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker04 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+
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+ AbfsPerfInfo tracker05 = new AbfsPerfInfo(abfsPerfTracker, null, null);
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+ AbfsPerfInfo tracker06 = new AbfsPerfInfo(abfsPerfTracker, "test", null);
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+ AbfsPerfInfo tracker07 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker08 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker09 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker10 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+
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+ AbfsPerfInfo tracker11 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker12 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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+ AbfsPerfInfo tracker13 = new AbfsPerfInfo(abfsPerfTracker, "test", "test");
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|
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+ ) {
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+ tracker01.registerResult(null).registerSuccess(false);
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+ tracker02.registerResult(null).registerSuccess(false);
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+ tracker03.registerResult(null).registerSuccess(false);
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+ tracker04.registerResult(httpOperation).registerSuccess(false);
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+
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+ tracker05.registerResult(null).registerSuccess(false).registerAggregates(null, 0);
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+ tracker06.registerResult(null).registerSuccess(false).registerAggregates(null, 0);
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+ tracker07.registerResult(null).registerSuccess(false).registerAggregates(null, 0);
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+ tracker08.registerResult(httpOperation).registerSuccess(false).registerAggregates(null, 0);
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+ tracker09.registerResult(httpOperation).registerSuccess(false).registerAggregates(Instant.now(), 0);
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+ tracker10.registerResult(httpOperation).registerSuccess(false).registerAggregates(Instant.now(), TEST_AGGREGATE_COUNT);
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+
|
|
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+ tracker11.registerResult(httpOperation).registerSuccess(false).registerAggregates(testInstant, TEST_AGGREGATE_COUNT);
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|
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+ tracker12.registerResult(httpOperation).registerSuccess(false).registerAggregates(Instant.MAX, TEST_AGGREGATE_COUNT);
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|
+ tracker13.registerResult(httpOperation).registerSuccess(false).registerAggregates(Instant.MIN, TEST_AGGREGATE_COUNT);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
Jeetesh Mangwani