Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/4238#discussion_r133688433
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/jobmanager/JobManagerCleanupITCase.java
---
@@ -0,0 +1,298 @@
+/*
+ * 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.flink.runtime.jobmanager;
+
+import akka.actor.ActorSystem;
+import akka.testkit.JavaTestKit;
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.configuration.AkkaOptions;
+import org.apache.flink.configuration.BlobServerOptions;
+import org.apache.flink.configuration.ConfigConstants;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.akka.ListeningBehaviour;
+import org.apache.flink.runtime.blob.BlobClient;
+import org.apache.flink.runtime.blob.BlobKey;
+import org.apache.flink.runtime.highavailability.HighAvailabilityServices;
+import org.apache.flink.runtime.instance.ActorGateway;
+import org.apache.flink.runtime.instance.AkkaActorGateway;
+import org.apache.flink.runtime.jobgraph.JobGraph;
+import org.apache.flink.runtime.jobgraph.JobVertex;
+import org.apache.flink.runtime.messages.JobManagerMessages;
+import org.apache.flink.runtime.testingUtils.TestingCluster;
+import org.apache.flink.runtime.testingUtils.TestingUtils;
+import org.apache.flink.runtime.testtasks.FailingBlockingInvokable;
+import org.apache.flink.runtime.testtasks.NoOpInvokable;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import scala.concurrent.Await;
+import scala.concurrent.Future;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.io.File;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.util.Arrays;
+
+import static
org.apache.flink.runtime.testingUtils.TestingUtils.DEFAULT_AKKA_ASK_TIMEOUT;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+/**
+ * Small test to check that the {@link
org.apache.flink.runtime.blob.BlobServer} cleanup is executed
+ * after job termination.
+ */
+public class JobManagerCleanupITCase {
+
+ @Rule
+ public TemporaryFolder tmpFolder = new TemporaryFolder();
+
+ private static ActorSystem system;
+
+ @BeforeClass
+ public static void setup() {
+ system = AkkaUtils.createLocalActorSystem(new Configuration());
+ }
+
+ @AfterClass
+ public static void teardown() {
+ JavaTestKit.shutdownActorSystem(system);
+ }
+
+ /**
+ * Specifies which test case to run in {@link
#testBlobServerCleanup(TestCase)}.
+ */
+ private enum TestCase {
+ JOB_FINISHES_SUCESSFULLY,
+ JOB_IS_CANCELLED,
+ JOB_FAILS,
+ JOB_SUBMISSION_FAILS
+ }
+
+ /**
+ * Test cleanup for a job that finishes ordinarily.
+ */
+ @Test
+ public void testBlobServerCleanupFinishedJob() throws IOException {
+ testBlobServerCleanup(TestCase.JOB_FINISHES_SUCESSFULLY);
+ }
+
+ /**
+ * Test cleanup for a job which is cancelled after submission.
+ */
+ @Test
+ public void testBlobServerCleanupCancelledJob() throws IOException {
+ testBlobServerCleanup(TestCase.JOB_IS_CANCELLED);
+ }
+
+ /**
+ * Test cleanup for a job that fails (first a task fails, then the job
recovers, then the whole
+ * job fails due to a limited restart policy).
+ */
+ @Test
+ public void testBlobServerCleanupFailedJob() throws IOException {
+ testBlobServerCleanup(TestCase.JOB_FAILS);
+ }
+
+ /**
+ * Test cleanup for a job that fails job submission (emulated by an
additional BLOB not being
+ * present).
+ */
+ @Test
+ public void testBlobServerCleanupFailedSubmission() throws IOException {
+ testBlobServerCleanup(TestCase.JOB_SUBMISSION_FAILS);
+ }
+
+ private void testBlobServerCleanup(final TestCase testCase) throws
IOException {
+ final int num_tasks = 2;
+ final File blobBaseDir = tmpFolder.newFolder();
+
+ new JavaTestKit(system) {{
+ new Within(duration("30 seconds")) {
+ @Override
+ protected void run() {
+ // Setup
+
+ TestingCluster cluster = null;
+ BlobClient bc = null;
+
+ try {
+ Configuration config = new
Configuration();
+
config.setInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, 2);
+
config.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER, 1);
+
config.setString(AkkaOptions.ASK_TIMEOUT, DEFAULT_AKKA_ASK_TIMEOUT());
+
config.setString(BlobServerOptions.STORAGE_DIRECTORY,
blobBaseDir.getAbsolutePath());
+
+
config.setString(ConfigConstants.RESTART_STRATEGY, "fixeddelay");
+
config.setInteger(ConfigConstants.RESTART_STRATEGY_FIXED_DELAY_ATTEMPTS, 1);
+
config.setString(ConfigConstants.RESTART_STRATEGY_FIXED_DELAY_DELAY, "1 s");
+ // BLOBs are deleted from
BlobCache between 1s and 2s after last reference
+ // -> the BlobCache may still
have the BLOB or not (let's test both cases randomly)
+
config.setLong(BlobServerOptions.CLEANUP_INTERVAL, 1L);
+
+ cluster = new
TestingCluster(config);
+ cluster.start();
+
+ final ActorGateway
jobManagerGateway = cluster.getLeaderGateway(
+
TestingUtils.TESTING_DURATION());
+
+ // we can set the leader
session ID to None because we don't use this gateway to send messages
+ final ActorGateway
testActorGateway = new AkkaActorGateway(getTestActor(),
+
HighAvailabilityServices.DEFAULT_LEADER_ID);
+
+ // Create a task
+
+ JobVertex source = new
JobVertex("Source");
+ if (testCase ==
TestCase.JOB_FAILS || testCase == TestCase.JOB_IS_CANCELLED) {
+
source.setInvokableClass(FailingBlockingInvokable.class);
+ } else {
+
source.setInvokableClass(NoOpInvokable.class);
+ }
+
source.setParallelism(num_tasks);
+
+ JobGraph jobGraph = new
JobGraph("BlobCleanupTest", source);
+ final JobID jid =
jobGraph.getJobID();
+
+ // request the blob port from
the job manager
+ Future<Object> future =
jobManagerGateway
+
.ask(JobManagerMessages.getRequestBlobManagerPort(), remaining());
+ int blobPort = (Integer)
Await.result(future, remaining());
+
+ // upload a blob
+ BlobKey key1;
+ bc = new BlobClient(new
InetSocketAddress("localhost", blobPort),
+ config);
+ try {
+ key1 = bc.put(jid, new
byte[10]);
+ } finally {
+ bc.close();
+ }
+ jobGraph.addBlob(key1);
+
+ if (testCase ==
TestCase.JOB_SUBMISSION_FAILS) {
+ // add an invalid key
so that the submission fails
+ jobGraph.addBlob(new
BlobKey());
+ }
+
+ // Submit the job and wait for
all vertices to be running
+ jobManagerGateway.tell(
+ new
JobManagerMessages.SubmitJob(
+ jobGraph,
+
ListeningBehaviour.EXECUTION_RESULT),
+ testActorGateway);
+ if (testCase ==
TestCase.JOB_SUBMISSION_FAILS) {
+
expectMsgClass(JobManagerMessages.JobResultFailure.class);
+ } else {
+
expectMsgClass(JobManagerMessages.JobSubmitSuccess.class);
+
+ if (testCase ==
TestCase.JOB_FAILS) {
+ // fail a task
so that the job is going to be recovered (we actually do not
+ // need the
blocking part of the invokable and can start throwing right away)
+
FailingBlockingInvokable.unblock();
+
+ // job will get
restarted, BlobCache may re-download the BLOB if already deleted
+ // then the
tasks will fail again and the restart strategy will finalise the job
+
+
expectMsgClass(JobManagerMessages.JobResultFailure.class);
+ } else if (testCase ==
TestCase.JOB_IS_CANCELLED) {
+
jobManagerGateway.tell(
+ new
JobManagerMessages.CancelJob(jid),
+
testActorGateway);
+
expectMsgClass(JobManagerMessages.CancellationResponse.class);
+
+ // job will be
cancelled and everything should be cleaned up
+
+
expectMsgClass(JobManagerMessages.JobResultFailure.class);
+ } else {
+
expectMsgClass(JobManagerMessages.JobResultSuccess.class);
+ }
+ }
+
+ // both BlobServer and
BlobCache should eventually delete all files
+
+ File[] blobDirs =
blobBaseDir.listFiles(new FilenameFilter() {
+ @Override
+ public boolean
accept(File dir, String name) {
+ return
name.startsWith("blobStore-");
+ }
+ });
+ assertNotNull(blobDirs);
+ for (File blobDir : blobDirs) {
+
waitForEmptyBlobDir(blobDir, remaining());
+ }
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ fail(e.getMessage());
--- End diff --
Unfortunately, we cannot throw an arbitrary exception from
`JavaTestKit.Within#run()`, otherwise it would be nice.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
