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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/06/30 19:48:40 UTC
[GitHub] [pulsar] merlimat opened a new pull request, #16310: Fixed deadlock when checking topic ownership
merlimat opened a new pull request, #16310:
URL: https://github.com/apache/pulsar/pull/16310
### Motivation
During the async create topic we were still calling the blocking `isServiceUnitActive()` which can cause a deadlock:
```
"main-EventThread" #19 daemon prio=5 os_prio=0 cpu=15617.40ms elapsed=277.07s tid=0x00007f2eb267e000 nid=0x56e5 waiting on condition [0x00007f2e5d0a7000]
java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@11.0.15/Native Method)
- parking to wait for <0x00000007ecf28a48> (a java.util.concurrent.CompletableFuture$Signaller)
at java.util.concurrent.locks.LockSupport.park(java.base@11.0.15/LockSupport.java:194)
at java.util.concurrent.CompletableFuture$Signaller.block(java.base@11.0.15/CompletableFuture.java:1796)
at java.util.concurrent.ForkJoinPool.managedBlock(java.base@11.0.15/ForkJoinPool.java:3128)
at java.util.concurrent.CompletableFuture.waitingGet(java.base@11.0.15/CompletableFuture.java:1823)
at java.util.concurrent.CompletableFuture.get(java.base@11.0.15/CompletableFuture.java:1998)
at com.github.benmanes.caffeine.cache.LocalAsyncCache$AbstractCacheView.resolve(LocalAsyncCache.java:515)
at com.github.benmanes.caffeine.cache.LocalAsyncLoadingCache$LoadingCacheView.get(LocalAsyncLoadingCache.java:122)
at org.apache.pulsar.common.naming.NamespaceBundleFactory.getBundles(NamespaceBundleFactory.java:260)
at org.apache.pulsar.broker.namespace.NamespaceService.getBundle(NamespaceService.java:218)
at org.apache.pulsar.broker.namespace.NamespaceService.isServiceUnitActive(NamespaceService.java:1006)
at org.apache.pulsar.broker.service.BrokerService.createPersistentTopic(BrokerService.java:1378)
at org.apache.pulsar.broker.service.BrokerService.lambda$loadOrCreatePersistentTopic$53(BrokerService.java:1351)
at org.apache.pulsar.broker.service.BrokerService$$Lambda$714/0x000000084059cc40.run(Unknown Source)
at java.util.concurrent.CompletableFuture$UniRun.tryFire(java.base@11.0.15/CompletableFuture.java:783)
at java.util.concurrent.CompletableFuture.postComplete(java.base@11.0.15/CompletableFuture.java:506)
at java.util.concurrent.CompletableFuture.complete(java.base@11.0.15/CompletableFuture.java:2073)
at org.apache.pulsar.common.naming.NamespaceBundleFactory.lambda$doLoadBundles$2(NamespaceBundleFactory.java:109)
at org.apache.pulsar.common.naming.NamespaceBundleFactory$$Lambda$484/0x00000008404d7840.accept(Unknown Source)
at java.util.concurrent.CompletableFuture$UniAccept.tryFire(java.base@11.0.15/CompletableFuture.java:714)
at java.util.concurrent.CompletableFuture.postComplete(java.base@11.0.15/CompletableFuture.java:506)
at java.util.concurrent.CompletableFuture.complete(java.base@11.0.15/CompletableFuture.java:2073)
at org.apache.pulsar.metadata.impl.ZKMetadataStore.handleGetResult(ZKMetadataStore.java:239)
at org.apache.pulsar.metadata.impl.ZKMetadataStore.lambda$batchOperation$6(ZKMetadataStore.java:183)
at org.apache.pulsar.metadata.impl.ZKMetadataStore$$Lambda$148/0x0000000840283440.processResult(Unknown Source)
at org.apache.pulsar.metadata.impl.PulsarZooKeeperClient$3$1.processResult(PulsarZooKeeperClient.java:490)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:722)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:563)
```
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[GitHub] [pulsar] merlimat merged pull request #16310: Fixed deadlock when checking topic ownership
Posted by GitBox <gi...@apache.org>.
merlimat merged PR #16310:
URL: https://github.com/apache/pulsar/pull/16310
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