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Posted to commits@pulsar.apache.org by "janmee (via GitHub)" <gi...@apache.org> on 2023/04/20 03:47:12 UTC
[GitHub] [pulsar] janmee opened a new issue, #20148: [Bug] ZKMetadataStore run into deadlock when creating topic using IsolatedBookieEnsemblePlacement in missing cache
janmee opened a new issue, #20148:
URL: https://github.com/apache/pulsar/issues/20148
### Search before asking
- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.
### Version
2.11.0
### Minimal reproduce step
1、create namespace and set bookie affinity group
2、create topic under that namespace
3、broker will appear log "ZooKeeper session reconnection timeout. Notifying session is lost."
### What did you expect to see?
create topic success
### What did you see instead?
topic creating is block
### Anything else?
`2023-04-19T21:53:11,365+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 4.166 seconds
2023-04-19T21:53:11,366+0800 [metadata-store-zk-session-watcher-11-1] INFO org.apache.pulsar.broker.PulsarService - Received metadata service session event: ConnectionLost
2023-04-19T21:53:11,367+0800 [metadata-store-zk-session-watcher-11-1] INFO org.apache.bookkeeper.mledger.impl.ManagedLedgerFactoryImpl - Received MetadataStore session event: ConnectionLost
2023-04-19T21:53:11,369+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 88,3 replyHeader:: 88,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:11,701+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 3.83 seconds
2023-04-19T21:53:11,702+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 89,3 replyHeader:: 89,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:12,035+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 3.496 seconds
2023-04-19T21:53:12,036+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 90,3 replyHeader:: 90,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:12,368+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 3.163 seconds
2023-04-19T21:53:12,369+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 91,3 replyHeader:: 91,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:12,702+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 2.83 seconds
2023-04-19T21:53:12,703+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 92,3 replyHeader:: 92,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:13,035+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 2.496 seconds
2023-04-19T21:53:13,036+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 93,3 replyHeader:: 93,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:13,369+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 2.163 seconds
2023-04-19T21:53:13,371+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 94,3 replyHeader:: 94,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:13,702+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 1.829 seconds
2023-04-19T21:53:13,703+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 95,3 replyHeader:: 95,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:14,035+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 1.496 seconds
2023-04-19T21:53:14,037+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 96,3 replyHeader:: 96,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:14,369+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 1.162 seconds
2023-04-19T21:53:14,370+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 97,3 replyHeader:: 97,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:14,702+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 0.829 seconds
2023-04-19T21:53:14,703+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 98,3 replyHeader:: 98,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:15,036+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 0.495 seconds
2023-04-19T21:53:15,037+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply session id: 0x24109391046d001e, packet:: clientPath:/ serverPath:/ finished:false header:: 99,3 replyHeader:: 99,4294969298,0 request:: '/,F response:: s{0,0,0,0,0,9,0,0,0,11,4294967580}
2023-04-19T21:53:15,176+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got notification session id: 0x24109391046d001e
2023-04-19T21:53:15,176+0800 [main-SendThread(11.238.117.36:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got WatchedEvent state:SyncConnected type:NodeDataChanged path:/loadbalance/brokers/11.238.117.36:8080 for session id 0x24109391046d001e
2023-04-19T21:53:15,369+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.metadata.impl.ZKSessionWatcher - ZooKeeper client is disconnected. Waiting to reconnect, time remaining = 0.162 seconds
2023-04-19T21:53:15,703+0800 [metadata-store-zk-session-watcher-11-1] INFO org.apache.pulsar.broker.PulsarService - Received metadata service session event: SessionLost
2023-04-19T21:53:15,978+0800 [metadata-store-zk-session-watcher-11-1] WARN org.apache.pulsar.broker.PulsarService - The session with metadata service was lost. Shutting down.
"main-EventThread" #19 daemon prio=5 os_prio=0 cpu=363.30ms elapsed=12.86s tid=0x00007fcd19a3b480 nid=0x3296 waiting on condition [0x00007fcaf02e5000]
java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@17.0.5/Native Method)
- parking to wait for <0x0000100015adbd50> (a java.util.concurrent.CompletableFuture$Signaller)
at java.util.concurrent.locks.LockSupport.park(java.base@17.0.5/LockSupport.java:211)
at java.util.concurrent.CompletableFuture$Signaller.block(java.base@17.0.5/CompletableFuture.java:1864)
at java.util.concurrent.ForkJoinPool.unmanagedBlock(java.base@17.0.5/ForkJoinPool.java:3463)
at java.util.concurrent.ForkJoinPool.managedBlock(java.base@17.0.5/ForkJoinPool.java:3434)
at java.util.concurrent.CompletableFuture.waitingGet(java.base@17.0.5/CompletableFuture.java:1898)
at java.util.concurrent.CompletableFuture.join(java.base@17.0.5/CompletableFuture.java:2117)
at org.apache.pulsar.bookie.rackawareness.IsolatedBookieEnsemblePlacementPolicy.initialize(IsolatedBookieEnsemblePlacementPolicy.java:91)
at org.apache.pulsar.bookie.rackawareness.IsolatedBookieEnsemblePlacementPolicy.initialize(IsolatedBookieEnsemblePlacementPolicy.java:51)
at org.apache.bookkeeper.client.BookKeeper.initializeEnsemblePlacementPolicy(BookKeeper.java:583)
at org.apache.bookkeeper.client.BookKeeper.<init>(BookKeeper.java:507)
at org.apache.bookkeeper.client.BookKeeper$Builder.build(BookKeeper.java:307)
at org.apache.pulsar.broker.BookKeeperClientFactoryImpl.create(BookKeeperClientFactoryImpl.java:83)
at org.apache.pulsar.broker.ManagedLedgerClientFactory.lambda$initialize$0(ManagedLedgerClientFactory.java:97)
at org.apache.pulsar.broker.ManagedLedgerClientFactory$$Lambda$715/0x0000000801192fb8.apply(Unknown Source)
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(java.base@17.0.5/ConcurrentHashMap.java:1708)
- locked <0x0000100015aa9f60> (a java.util.concurrent.ConcurrentHashMap$ReservationNode)
at org.apache.pulsar.broker.ManagedLedgerClientFactory.lambda$initialize$1(ManagedLedgerClientFactory.java:95)
at org.apache.pulsar.broker.ManagedLedgerClientFactory$$Lambda$187/0x0000000800edc080.get(Unknown Source)
at org.apache.bookkeeper.mledger.impl.ManagedLedgerFactoryImpl.lambda$asyncOpen$6(ManagedLedgerFactoryImpl.java:373)
at org.apache.bookkeeper.mledger.impl.ManagedLedgerFactoryImpl$$Lambda$709/0x0000000801186698.apply(Unknown Source)
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(java.base@17.0.5/ConcurrentHashMap.java:1708)
- locked <0x0000100014f25a88> (a java.util.concurrent.ConcurrentHashMap$ReservationNode)
at org.apache.bookkeeper.mledger.impl.ManagedLedgerFactoryImpl.asyncOpen(ManagedLedgerFactoryImpl.java:369)
at org.apache.pulsar.broker.service.BrokerService.lambda$createPersistentTopic$54(BrokerService.java:1429)
at org.apache.pulsar.broker.service.BrokerService$$Lambda$707/0x000000080117f898.accept(Unknown Source)
at java.util.concurrent.CompletableFuture.uniAcceptNow(java.base@17.0.5/CompletableFuture.java:757)
at java.util.concurrent.CompletableFuture.uniAcceptStage(java.base@17.0.5/CompletableFuture.java:735)
at java.util.concurrent.CompletableFuture.thenAccept(java.base@17.0.5/CompletableFuture.java:2182)
at org.apache.pulsar.broker.service.BrokerService.createPersistentTopic(BrokerService.java:1407)
at org.apache.pulsar.broker.service.BrokerService.lambda$checkOwnershipAndCreatePersistentTopic$49(BrokerService.java:1375)
at org.apache.pulsar.broker.service.BrokerService$$Lambda$698/0x000000080117a5c0.accept(Unknown Source)
at java.util.concurrent.CompletableFuture.uniAcceptNow(java.base@17.0.5/CompletableFuture.java:757)
at java.util.concurrent.CompletableFuture.uniAcceptStage(java.base@17.0.5/CompletableFuture.java:735)
at java.util.concurrent.CompletableFuture.thenAccept(java.base@17.0.5/CompletableFuture.java:2182)
at org.apache.pulsar.broker.service.BrokerService.checkOwnershipAndCreatePersistentTopic(BrokerService.java:1377)
at org.apache.pulsar.broker.service.BrokerService.lambda$loadOrCreatePersistentTopic$46(BrokerService.java:1350)
at org.apache.pulsar.broker.service.BrokerService$$Lambda$708/0x00000008011af880.run(Unknown Source)
at java.util.concurrent.CompletableFuture.uniRunNow(java.base@17.0.5/CompletableFuture.java:819)
at java.util.concurrent.CompletableFuture.uniRunStage(java.base@17.0.5/CompletableFuture.java:803)
at java.util.concurrent.CompletableFuture.thenRun(java.base@17.0.5/CompletableFuture.java:2195)
at org.apache.pulsar.broker.service.BrokerService.loadOrCreatePersistentTopic(BrokerService.java:1346)
at org.apache.pulsar.broker.service.BrokerService.lambda$getTopic$23(BrokerService.java:991)
at org.apache.pulsar.broker.service.BrokerService$$Lambda$701/0x00000008011ae8e8.apply(Unknown Source)
at org.apache.pulsar.common.util.collections.ConcurrentOpenHashMap$Section.put(ConcurrentOpenHashMap.java:404)
at org.apache.pulsar.common.util.collections.ConcurrentOpenHashMap.computeIfAbsent(ConcurrentOpenHashMap.java:238)
at org.apache.pulsar.broker.service.BrokerService.getTopic(BrokerService.java:990)
at org.apache.pulsar.broker.service.BrokerService.getTopic(BrokerService.java:952)
at org.apache.pulsar.broker.service.BrokerService.getTopicIfExists(BrokerService.java:944)
at org.apache.pulsar.broker.admin.impl.PersistentTopicsBase.lambda$internalCreateNonPartitionedTopicAsync$49(PersistentTopicsBase.java:530)
at org.apache.pulsar.broker.admin.impl.PersistentTopicsBase$$Lambda$616/0x000000080113d660.apply(Unknown Source)
at java.util.concurrent.CompletableFuture$UniCompose.tryFire(java.base@17.0.5/CompletableFuture.java:1150)
at java.util.concurrent.CompletableFuture.postComplete(java.base@17.0.5/CompletableFuture.java:510)
at java.util.concurrent.CompletableFuture.complete(java.base@17.0.5/CompletableFuture.java:2147)
at org.apache.pulsar.metadata.impl.ZKMetadataStore.handleGetResult(ZKMetadataStore.java:262)
at org.apache.pulsar.metadata.impl.ZKMetadataStore.lambda$batchOperation$8(ZKMetadataStore.java:212)
at org.apache.pulsar.metadata.impl.ZKMetadataStore$$Lambda$162/0x0000000800e8a448.processResult(Unknown Source)
at org.apache.pulsar.metadata.impl.PulsarZooKeeperClient$3$1.processResult(PulsarZooKeeperClient.java:489)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:712)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:553)
Locked ownable synchronizers:
- None
`
broker log in ZKMetadataStore, we can see zk client has replied request, but ZKMetadataStore still disconnect. In the stack of zk EventThread, we know that EventThread got block in IsolatedBookieEnsemblePlacementPolicy.initialize(IsolatedBookieEnsemblePlacementPolicy.java:91) .
`
public RackawareEnsemblePlacementPolicyImpl initialize(ClientConfiguration conf,
Optional<DNSToSwitchMapping> optionalDnsResolver, HashedWheelTimer timer, FeatureProvider featureProvider,
StatsLogger statsLogger, BookieAddressResolver bookieAddressResolver) {
MetadataStore store;
try {
store = BookieRackAffinityMapping.createMetadataStore(conf);
} catch (MetadataException e) {
throw new RuntimeException(METADATA_STORE_INSTANCE + " failed initialized");
}
Set<String> primaryIsolationGroups = new HashSet<>();
Set<String> secondaryIsolationGroups = new HashSet<>();
if (conf.getProperty(ISOLATION_BOOKIE_GROUPS) != null) {
String isolationGroupsString = ConfigurationStringUtil
.castToString(conf.getProperty(ISOLATION_BOOKIE_GROUPS));
if (!isolationGroupsString.isEmpty()) {
for (String isolationGroup : isolationGroupsString.split(",")) {
primaryIsolationGroups.add(isolationGroup);
}
}
// Only add the bookieMappingCache if we have defined an isolation group
bookieMappingCache = store.getMetadataCache(BookiesRackConfiguration.class);
bookieMappingCache.get(BookieRackAffinityMapping.BOOKIE_INFO_ROOT_PATH).join();
}
if (conf.getProperty(SECONDARY_ISOLATION_BOOKIE_GROUPS) != null) {
String secondaryIsolationGroupsString = ConfigurationStringUtil
.castToString(conf.getProperty(SECONDARY_ISOLATION_BOOKIE_GROUPS));
if (!secondaryIsolationGroupsString.isEmpty()) {
for (String isolationGroup : secondaryIsolationGroupsString.split(",")) {
secondaryIsolationGroups.add(isolationGroup);
}
}
}
defaultIsolationGroups = ImmutablePair.of(primaryIsolationGroups, secondaryIsolationGroups);
return super.initialize(conf, optionalDnsResolver, timer, featureProvider, statsLogger, bookieAddressResolver);
}
`
in source code, we can see creating bookie client must wait until getting the node "/bookies" succeed from the cache. if node "/bookies" is not in cache, ZKMetadataStore will get it from zk. However, creating bookie client is running in the zk EventThread, and waiting for getting node "/bookies" complete, and the callback getting node "/bookies" from zk must run in EventThread。it will appear deadlock in this situation
### Are you willing to submit a PR?
- [ ] I'm willing to submit a PR!
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Re: [I] [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache [pulsar]
Posted by "Technoboy- (via GitHub)" <gi...@apache.org>.
Technoboy- closed issue #20148: [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache
URL: https://github.com/apache/pulsar/issues/20148
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[GitHub] [pulsar] poorbarcode commented on issue #20148: [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache
Posted by "poorbarcode (via GitHub)" <gi...@apache.org>.
poorbarcode commented on issue #20148:
URL: https://github.com/apache/pulsar/issues/20148#issuecomment-1593290151
> https://github.com/apache/pulsar/pull/20303 handles a related issue that is possibly solving this one also.
No, the PR https://github.com/apache/pulsar/pull/20303 is not helpful for this issue. I'll take note of the issue and will try to fix it later.
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[GitHub] [pulsar] tisonkun commented on issue #20148: [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache
Posted by "tisonkun (via GitHub)" <gi...@apache.org>.
tisonkun commented on issue #20148:
URL: https://github.com/apache/pulsar/issues/20148#issuecomment-1593144676
https://github.com/apache/pulsar/pull/20303 handles a related issue that is possibly solve this one also.
cc @poorbarcode
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Re: [I] [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache [pulsar]
Posted by "Technoboy- (via GitHub)" <gi...@apache.org>.
Technoboy- commented on issue #20148:
URL: https://github.com/apache/pulsar/issues/20148#issuecomment-1868989315
https://github.com/apache/pulsar/pull/21096 has fixed this issue
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[GitHub] [pulsar] github-actions[bot] commented on issue #20148: [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #20148:
URL: https://github.com/apache/pulsar/issues/20148#issuecomment-1560351669
The issue had no activity for 30 days, mark with Stale label.
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[GitHub] [pulsar] github-actions[bot] commented on issue #20148: [Bug] Broker gets block while creating topic using IsolatedBookieEnsemblePlacement in missing cache
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #20148:
URL: https://github.com/apache/pulsar/issues/20148#issuecomment-1636951774
The issue had no activity for 30 days, mark with Stale label.
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