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mmerli pushed a commit to branch branch-2.9
in repository https://gitbox.apache.org/repos/asf/pulsar.git
The following commit(s) were added to refs/heads/branch-2.9 by this push:
new 1038a745c35 Fixed deadlock when checking topic ownership (#16310)
1038a745c35 is described below
commit 1038a745c352e1adda1e0b9f62d5fab23dce6b17
Author: Matteo Merli <mme...@apache.org>
AuthorDate: Sat Jul 2 17:02:07 2022 -0700
Fixed deadlock when checking topic ownership (#16310)
* Fixed deadlock when checking topic ownership
* Fixed mocked test
* Fixed ServerCnxTest
* Fixed testProducerOnNotOwnedTopic
---
.../pulsar/broker/namespace/NamespaceService.java | 9 ++++++
.../pulsar/broker/service/BrokerService.java | 33 ++++++++++++++--------
.../pulsar/broker/service/PersistentTopicTest.java | 1 +
.../pulsar/broker/service/ServerCnxTest.java | 4 ++-
4 files changed, 35 insertions(+), 12 deletions(-)
diff --git
a/pulsar-broker/src/main/java/org/apache/pulsar/broker/namespace/NamespaceService.java
b/pulsar-broker/src/main/java/org/apache/pulsar/broker/namespace/NamespaceService.java
index 4d910cb901d..fa4cd16ee11 100644
---
a/pulsar-broker/src/main/java/org/apache/pulsar/broker/namespace/NamespaceService.java
+++
b/pulsar-broker/src/main/java/org/apache/pulsar/broker/namespace/NamespaceService.java
@@ -1008,6 +1008,15 @@ public class NamespaceService implements AutoCloseable {
}
}
+ public CompletableFuture<Boolean> isServiceUnitActiveAsync(TopicName
topicName) {
+ Optional<CompletableFuture<OwnedBundle>> res =
ownershipCache.getOwnedBundleAsync(getBundle(topicName));
+ if (!res.isPresent()) {
+ return CompletableFuture.completedFuture(false);
+ }
+
+ return res.get().thenApply(ob -> ob != null && ob.isActive());
+ }
+
private boolean isNamespaceOwned(NamespaceName fqnn) throws Exception {
return ownershipCache.getOwnedBundle(getFullBundle(fqnn)) != null;
}
diff --git
a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/BrokerService.java
b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/BrokerService.java
index 24ef20452c0..bc6dbb73750 100644
---
a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/BrokerService.java
+++
b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/BrokerService.java
@@ -1279,7 +1279,7 @@ public class BrokerService implements Closeable {
final Semaphore topicLoadSemaphore =
topicLoadRequestSemaphore.get();
if (topicLoadSemaphore.tryAcquire()) {
- createPersistentTopic(topic, createIfMissing,
topicFuture);
+ checkOwnershipAndCreatePersistentTopic(topic,
createIfMissing, topicFuture);
topicFuture.handle((persistentTopic, ex) -> {
// release permit and process pending topic
topicLoadSemaphore.release();
@@ -1300,19 +1300,30 @@ public class BrokerService implements Closeable {
return topicFuture;
}
- private void createPersistentTopic(final String topic, boolean
createIfMissing,
+ private void checkOwnershipAndCreatePersistentTopic(final String topic,
boolean createIfMissing,
CompletableFuture<Optional<Topic>>
topicFuture) {
+ TopicName topicName = TopicName.get(topic);
+ pulsar.getNamespaceService().isServiceUnitActiveAsync(topicName)
+ .thenAccept(isActive -> {
+ if (isActive) {
+ createPersistentTopic(topic, createIfMissing,
topicFuture);
+ } else {
+ // namespace is being unloaded
+ String msg = String.format("Namespace is being
unloaded, cannot add topic %s", topic);
+ log.warn(msg);
+ pulsar.getExecutor().execute(() ->
topics.remove(topic, topicFuture));
+ topicFuture.completeExceptionally(new
ServiceUnitNotReadyException(msg));
+ }
+ }).exceptionally(ex -> {
+ topicFuture.completeExceptionally(ex);
+ return null;
+ });
+ }
+ private void createPersistentTopic(final String topic, boolean
createIfMissing,
+ CompletableFuture<Optional<Topic>>
topicFuture) {
final long topicCreateTimeMs =
TimeUnit.NANOSECONDS.toMillis(System.nanoTime());
TopicName topicName = TopicName.get(topic);
- if (!pulsar.getNamespaceService().isServiceUnitActive(topicName)) {
- // namespace is being unloaded
- String msg = String.format("Namespace is being unloaded, cannot
add topic %s", topic);
- log.warn(msg);
- pulsar.getExecutor().execute(() -> topics.remove(topic,
topicFuture));
- topicFuture.completeExceptionally(new
ServiceUnitNotReadyException(msg));
- return;
- }
if (isTransactionSystemTopic(topicName)) {
String msg = String.format("Can not create transaction system
topic %s", topic);
@@ -2386,7 +2397,7 @@ public class BrokerService implements Closeable {
CompletableFuture<Optional<Topic>> pendingFuture =
pendingTopic.getRight();
final Semaphore topicLoadSemaphore =
topicLoadRequestSemaphore.get();
final boolean acquiredPermit = topicLoadSemaphore.tryAcquire();
- createPersistentTopic(topic, true, pendingFuture);
+ checkOwnershipAndCreatePersistentTopic(topic, true, pendingFuture);
pendingFuture.handle((persistentTopic, ex) -> {
// release permit and process next pending topic
if (acquiredPermit) {
diff --git
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
index 26004251399..3e527e8135a 100644
---
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
+++
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/PersistentTopicTest.java
@@ -229,6 +229,7 @@ public class PersistentTopicTest extends
MockedBookKeeperTestCase {
doReturn(nsSvc).when(pulsar).getNamespaceService();
doReturn(true).when(nsSvc).isServiceUnitOwned(any());
doReturn(true).when(nsSvc).isServiceUnitActive(any());
+
doReturn(CompletableFuture.completedFuture(true)).when(nsSvc).isServiceUnitActiveAsync(any());
doReturn(CompletableFuture.completedFuture(true)).when(nsSvc).checkTopicOwnership(any());
setupMLAsyncCallbackMocks();
diff --git
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/ServerCnxTest.java
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/ServerCnxTest.java
index 5615a28a457..be9ed72cd14 100644
---
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/ServerCnxTest.java
+++
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/ServerCnxTest.java
@@ -198,6 +198,7 @@ public class ServerCnxTest {
doReturn(namespaceService).when(pulsar).getNamespaceService();
doReturn(true).when(namespaceService).isServiceUnitOwned(any());
doReturn(true).when(namespaceService).isServiceUnitActive(any());
+
doReturn(CompletableFuture.completedFuture(true)).when(namespaceService).isServiceUnitActiveAsync(any());
doReturn(CompletableFuture.completedFuture(true)).when(namespaceService).checkTopicOwnership(any());
setupMLAsyncCallbackMocks();
@@ -463,7 +464,8 @@ public class ServerCnxTest {
setChannelConnected();
// Force the case where the broker doesn't own any topic
-
doReturn(false).when(namespaceService).isServiceUnitActive(any(TopicName.class));
+
doReturn(CompletableFuture.completedFuture(false)).when(namespaceService)
+ .isServiceUnitActiveAsync(any(TopicName.class));
// test PRODUCER failure case
ByteBuf clientCommand = Commands.newProducer(nonOwnedTopicName, 1 /*
producer id */, 1 /* request id */,
