terrymanu opened a new issue #11961:
URL: https://github.com/apache/shardingsphere/issues/11961
```log
[ERROR] 2021-08-23 23:41:26.984 [Curator-SafeNotifyService-0]
c.g.common.eventbus.EventBus.default - Exception thrown by subscriber method
renew(org.apache.shardingsphere.governance.core.registry.config.event.datasource.DataSourceChangedEvent)
on subscriber
org.apache.shardingsphere.infra.mode.manager.cluster.ClusterContextManager@164d01ba
when dispatching event:
org.apache.shardingsphere.governance.core.registry.config.event.datasource.DataSourceChangedEvent@73925a71
org.apache.shardingsphere.infra.exception.ShardingSphereException:
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at
org.apache.shardingsphere.infra.metadata.schema.builder.TableMetaDataLoaderEngine.loadByDialect(TableMetaDataLoaderEngine.java:91)
at
org.apache.shardingsphere.infra.metadata.schema.builder.TableMetaDataLoaderEngine.load(TableMetaDataLoaderEngine.java:61)
at
org.apache.shardingsphere.sharding.metadata.ShardingTableMetaDataBuilder.loadWithoutCheck(ShardingTableMetaDataBuilder.java:96)
at
org.apache.shardingsphere.sharding.metadata.ShardingTableMetaDataBuilder.load(ShardingTableMetaDataBuilder.java:75)
at
org.apache.shardingsphere.sharding.metadata.ShardingTableMetaDataBuilder.load(ShardingTableMetaDataBuilder.java:62)
at
org.apache.shardingsphere.infra.metadata.schema.builder.TableMetaDataBuilder.load(TableMetaDataBuilder.java:79)
at
org.apache.shardingsphere.infra.metadata.schema.builder.SchemaBuilder.buildActualTableMetaDataMap(SchemaBuilder.java:65)
at
org.apache.shardingsphere.infra.metadata.schema.builder.SchemaBuilder.build(SchemaBuilder.java:53)
at
org.apache.shardingsphere.infra.context.metadata.MetaDataContextsBuilder.build(MetaDataContextsBuilder.java:100)
at
org.apache.shardingsphere.infra.mode.manager.cluster.ClusterContextManager.rebuildMetaData(ClusterContextManager.java:339)
at
org.apache.shardingsphere.infra.mode.manager.cluster.ClusterContextManager.renew(ClusterContextManager.java:240)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:87)
at
com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:144)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:72)
at
com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:30)
at
com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:67)
at
com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:108)
at com.google.common.eventbus.EventBus.post(EventBus.java:212)
at java.util.Optional.ifPresent(Optional.java:159)
at
org.apache.shardingsphere.governance.core.registry.GovernanceWatcherFactory.lambda$watch$0(GovernanceWatcherFactory.java:59)
at
org.apache.shardingsphere.governance.repository.zookeeper.CuratorZookeeperRepository.lambda$watch$1(CuratorZookeeperRepository.java:247)
at
org.apache.curator.framework.recipes.cache.TreeCacheListenerWrapper.sendEvent(TreeCacheListenerWrapper.java:71)
at
org.apache.curator.framework.recipes.cache.TreeCacheListenerWrapper.event(TreeCacheListenerWrapper.java:48)
at
org.apache.curator.framework.recipes.cache.CuratorCacheListenerBuilderImpl$2.lambda$event$0(CuratorCacheListenerBuilderImpl.java:149)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at
org.apache.curator.framework.recipes.cache.CuratorCacheListenerBuilderImpl$2.event(CuratorCacheListenerBuilderImpl.java:149)
at
org.apache.curator.framework.recipes.cache.CuratorCacheImpl.lambda$putStorage$6(CuratorCacheImpl.java:274)
at
org.apache.curator.framework.listen.MappingListenerManager.lambda$forEach$0(MappingListenerManager.java:92)
at
org.apache.curator.framework.listen.MappingListenerManager.forEach(MappingListenerManager.java:89)
at
org.apache.curator.framework.listen.StandardListenerManager.forEach(StandardListenerManager.java:89)
at
org.apache.curator.framework.recipes.cache.CuratorCacheImpl.lambda$callListeners$10(CuratorCacheImpl.java:293)
at
java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.ExecutionException:
java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.shardingsphere.infra.metadata.schema.builder.TableMetaDataLoaderEngine.loadByDialect(TableMetaDataLoaderEngine.java:85)
... 38 common frames omitted
Caused by: java.lang.NullPointerException: null
at
org.apache.shardingsphere.infra.metadata.schema.builder.loader.dialect.H2TableMetaDataLoader.load(H2TableMetaDataLoader.java:64)
at
org.apache.shardingsphere.infra.metadata.schema.builder.TableMetaDataLoaderEngine.lambda$loadByDialect$0(TableMetaDataLoaderEngine.java:81)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
... 3 common frames omitted
```
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