[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1682) duplicate key value violates unique constraint "jbm_msg_pkey" exceptions in a clustered

[Howard Gao (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBMESSAGING-1682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12475611#action_12475611 ] 

Howard Gao commented on JBMESSAGING-1682:
-----------------------------------------

The id can be generated using the following modified code:


      long id1 = nodeID << 48;

      long id2 = (System.currentTimeMillis() << 15) & 0x0000FFFFFFFFFFFFL; //reserve the high 16 bits for node id

      long id = id1 | id2 | count;


> duplicate key value violates unique constraint "jbm_msg_pkey" exceptions in a clustered
> ---------------------------------------------------------------------------------------
>
>                 Key: JBMESSAGING-1682
>                 URL: https://jira.jboss.org/jira/browse/JBMESSAGING-1682
>             Project: JBoss Messaging
>          Issue Type: Bug
>          Components: JMS Clustering
>    Affects Versions: 1.4.0.SP3.CP07, 1.4.0.SP3.CP08, 1.4.4.GA
>            Reporter: Masao Kato
>            Assignee: Howard Gao
>            Priority: Critical
>             Fix For: 1.4.0.SP3.CP09, 1.4.5.GA
>
>
> NodeID(server peer id) of the cluster : in the adjoined identification number such as 0 and 1, 2 and 3. 
> When message ID is generated at the same time, the exception might be generated by the duplicate of ID. 

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