bilahepan opened a new issue #10229:
URL: https://github.com/apache/pulsar/issues/10229
**Describe the bug**
The cluster is running normally and an exception is occasionally reported。
Pulsar Version 2.5.1
**Exception details**
[pulsar-load-manager-3-1] WARN
org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerImpl - Error when
attempting to update local broker data: {}
java.util.ConcurrentModificationException: null
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
~[?:1.8.0_272]
at java.util.HashMap$EntryIterator.next(HashMap.java:1479)
~[?:1.8.0_272]
at java.util.HashMap$EntryIterator.next(HashMap.java:1477)
~[?:1.8.0_272]
at
org.apache.pulsar.policies.data.loadbalancer.LocalBrokerData.updateBundleData(LocalBrokerData.java:179)
~[org.apache.pulsar-pulsar-common-2.5.1.jar:2.5.1]
at
org.apache.pulsar.policies.data.loadbalancer.LocalBrokerData.update(LocalBrokerData.java:125)
~[org.apache.pulsar-pulsar-common-2.5.1.jar:2.5.1]
at
org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerImpl.updateLocalBrokerData(ModularLoadManagerImpl.java:855)
[org.apache.pulsar-pulsar-broker-2.5.1.jar:2.5.1]
at
org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerImpl.writeBrokerDataOnZooKeeper(ModularLoadManagerImpl.java:868)
[org.apache.pulsar-pulsar-broker-2.5.1.jar:2.5.1]
at
org.apache.pulsar.broker.loadbalance.impl.ModularLoadManagerWrapper.writeLoadReportOnZookeeper(ModularLoadManagerWrapper.java:120)
[org.apache.pulsar-pulsar-broker-2.5.1.jar:2.5.1]
at
org.apache.pulsar.broker.loadbalance.LoadReportUpdaterTask.run(LoadReportUpdaterTask.java:41)
[org.apache.pulsar-pulsar-broker-2.5.1.jar:2.5.1]
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[?:1.8.0_272]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
[?:1.8.0_272]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
[?:1.8.0_272]
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
[?:1.8.0_272]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[?:1.8.0_272]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[?:1.8.0_272]
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
[io.netty-netty-common-4.1.45.Final.jar:4.1.45.Final]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_272]
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