lujiwen commented on pull request #11198:
URL: https://github.com/apache/pulsar/pull/11198#issuecomment-1017295037
@merlimat I got a problem when I tried to upgrade my pulsar cluster from
2.8.0 to 2.9.1, the existing zookeeper server cluster version is 3.5.5. The
upgraded pulsar cluster failed to start, because this exception _###
**org.apache.zookeeper.KeeperException$UnimplementedException**_, the
stacktrace is as follows:
`022-01-20T17:20:32,455+0800 [main] ERROR
org.apache.pulsar.broker.PulsarService - Failed to start Pulsar service:
org.apache.zookeeper.KeeperException$UnimplementedException: KeeperErrorCode =
Unimplemented for /
org.apache.pulsar.metadata.api.MetadataStoreException:
org.apache.zookeeper.KeeperException$UnimplementedException: KeeperErrorCode =
Unimplemented for /
at
org.apache.pulsar.metadata.impl.ZKMetadataStore.<init>(ZKMetadataStore.java:89)
~[org.apache.pulsar-pulsar-metadata-2.9.1.jar:2.9.1]
at
org.apache.pulsar.metadata.impl.MetadataStoreFactoryImpl.newInstance(MetadataStoreFactoryImpl.java:52)
~[org.apache.pulsar-pulsar-metadata-2.9.1.jar:2.9.1]
at
org.apache.pulsar.metadata.impl.MetadataStoreFactoryImpl.createExtended(MetadataStoreFactoryImpl.java:36)
~[org.apache.pulsar-pulsar-metadata-2.9.1.jar:2.9.1]
`
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