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Posted to issues@bookkeeper.apache.org by GitBox <gi...@apache.org> on 2020/12/02 10:43:31 UTC

[GitHub] [bookkeeper] eolivelli opened a new issue #2505: NullPointerException during the stop of a BookKeeper with BookKeeper Stream Storage Server

eolivelli opened a new issue #2505:
URL: https://github.com/apache/bookkeeper/issues/2505


   **BUG REPORT**
   
   ***Describe the bug***
   
   When you stop a Bookie with the StreamStorage server enabled you can see a scary NullPointerException.
   
   We should avoid to throw the NPE, that is usually the symptom of a bug
   
   ***To Reproduce***
   
   Steps to reproduce the behavior:
   1. Start a bookie with `extraServerComponents=org.apache.bookkeeper.stream.server.StreamStorageLifecycleComponent`
   2. Shutdown the bookie
   
   You can see this error:
   
   ```
   2020-12-02 11:04:24,962 - ERROR - [component-shutdown-thread:ComponentStarter$ComponentShutdownHook@51] - Failed to close component bookie-server in shutdown hook gracefully, Exiting anyway
   java.lang.NullPointerException
   	at org.apache.bookkeeper.stream.server.service.RegistrationStateService.doClose(RegistrationStateService.java:107)
   	at org.apache.bookkeeper.common.component.AbstractLifecycleComponent.close(AbstractLifecycleComponent.java:123)
   	at org.apache.bookkeeper.common.component.LifecycleComponentStack.lambda$close$6(LifecycleComponentStack.java:154)
   	at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:405)
   	at org.apache.bookkeeper.common.component.LifecycleComponentStack.close(LifecycleComponentStack.java:154)
   	at org.apache.bookkeeper.stream.server.StreamStorageLifecycleComponent.doClose(StreamStorageLifecycleComponent.java:59)
   	at org.apache.bookkeeper.common.component.AbstractLifecycleComponent.close(AbstractLifecycleComponent.java:123)
   	at org.apache.bookkeeper.common.component.LifecycleComponentStack.lambda$close$6(LifecycleComponentStack.java:154)
   	at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:405)
   	at org.apache.bookkeeper.common.component.LifecycleComponentStack.close(LifecycleComponentStack.java:154)
   	at org.apache.bookkeeper.common.component.ComponentStarter$ComponentShutdownHook.run(ComponentStarter.java:47)
   	at java.base/java.lang.Thread.run(Thread.java:832)
   ```
   


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[GitHub] [bookkeeper] rudy2steiner commented on issue #2505: NullPointerException during the stop of a BookKeeper with BookKeeper Stream Storage Server

Posted by GitBox <gi...@apache.org>.
rudy2steiner commented on issue #2505:
URL: https://github.com/apache/bookkeeper/issues/2505#issuecomment-737665721


   I'll work on it


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