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Posted to issues@activemq.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2018/12/15 00:59:00 UTC

[jira] [Commented] (ARTEMIS-2050) It is possible to get AMQ224000: Failure in initialisation: java.lang.NullPointerException during shutdown of backup server with shared store

    [ https://issues.apache.org/jira/browse/ARTEMIS-2050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721922#comment-16721922 ] 

ASF subversion and git services commented on ARTEMIS-2050:
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Commit 3c3c81720a93e7617fca757dd9df49cd3b590d96 in activemq-artemis's branch refs/heads/master from JiriOndrusek
[ https://git-wip-us.apache.org/repos/asf?p=activemq-artemis.git;h=3c3c817 ]

[ARTEMIS-2050] It is possible to get AMQ224000: Failure in initialisation: java.lang.NullPointerException during shutdown of backup server with shared store


> It is possible to get AMQ224000: Failure in initialisation: java.lang.NullPointerException during shutdown of backup server with shared store
> ---------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ARTEMIS-2050
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2050
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 1.5.5, 2.7.0
>            Reporter: Jiri Ondrusek
>            Priority: Major
>
> On system with slower reactions, there could be a NullPointerException in log.
>  
> Problem happens during shutdown of backup server during activation (using SharedStoreBackupActivation)
> Scenario: live/backup pair with shared store. Live is stopped and then backup is stopped before activation is complete. On slower machines, there is a possibility, that FailbackChecker is initialized even if cluster connection is cleared to null (because of shutting down). This ends with NPE during backup shutdown.
> It is possible to simulate it with SharedStoreBackupTest with addition of Thread.sleep(500) into begining of SharedStoreBackupActivation.startFailbackChecker. Exception can be then seen in test output.



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