[jira] [Updated] (ARTEMIS-2511) Got duplicated messages when using ha-policy-autobackup

["Justin Bertram (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARTEMIS-2511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Bertram updated ARTEMIS-2511:
------------------------------------
    Component/s:     (was: ActiveMQ-Artemis-Native)

> Got duplicated messages when using ha-policy-autobackup
> -------------------------------------------------------
>
>                 Key: ARTEMIS-2511
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2511
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 2.10.1
>            Reporter: Ning Kang
>            Assignee: Clebert Suconic
>            Priority: Major
>
> I tried [this example|https://github.com/apache/activemq-artemis/tree/master/examples/features/ha/ha-policy-autobackup], but found a bug of duplicated messages and 2 other issues.
> When finish step 16 in HAPolicyAutoBackupExample, if I restart server1 and consumer1, then all scaled down messages that already consumed in step 16 by consumer0 will be received again by consumer1. 
> To reproduce this bug, just follow the setup in the {{ha-policy-autobackup}} example, and add the follow steps after step 16 in {{HAPolicyAutoBackupExample.java}}: 
>  - 16a: restart server 1
>  - 16b: restart consumer1
>  - 16c: consumer1 will receive all scaled down messages that already consumed by consumer0 
> Is this a bug of Artemis HA, or there is some extra configurations need to be made in {{broker.xml}} to avoid scaled down messages to be consumed again? 
> *Another 2 issues I found related to this example are:*
> 1. After restart server1, both server0 and server1 will continuously do RequestBackupVote actions and never stop, is this normal? See example log
> {code:java}
> 2019-10-03 17:26:37,916 INFO [org.apache.activemq.artemis.core.server] AMQ221063: Sending quorum vote response: RequestBackupVote [backupsSize=1, nodeID=1905cb70-e508-11e9-8290-00505680c5d7, backupAvailable=false]
> 2019-10-03 17:26:38,926 INFO [org.apache.activemq.artemis.core.server] AMQ221062: Received quorum vote request: RequestBackupVote [backupsSize=-1, nodeID=null, backupAvailable=false]{code}
> 2. Even if server1 is restarted, the loadbalancer is not working any more. All messages from producer0 will only be sent to server0, instead of half of messages sent to server0, another half sent to server1.



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