[infinispan-issues] [JBoss JIRA] (ISPN-1799) We should avoid using exceptions for flow control when acquiring state transfer lock

[Dan Berindei (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12679881#comment-12679881 ] 

Dan Berindei commented on ISPN-1799:
------------------------------------

Prabhat, I did try to get it into 5.1.3.FINAL, but it needs more polish and tests, so I'm not trying to push it in right now.
                
> We should avoid using exceptions for flow control when acquiring state transfer lock
> ------------------------------------------------------------------------------------
>
>                 Key: ISPN-1799
>                 URL: https://issues.jboss.org/browse/ISPN-1799
>             Project: Infinispan
>          Issue Type: Task
>          Components: State transfer
>    Affects Versions: 5.1.0.FINAL
>            Reporter: Dan Berindei
>            Assignee: Dan Berindei
>             Fix For: 5.2.0.FINAL
>
>
> We currently use `StateTransferInProgressException` as a marker that a write command failed to acquire the state transfer lock and it should be retried. With ISPN-1704 I added another exception, StateTransferLockReacquisitionException, to signal that a write command failed to re-acquire the state transfer lock after it had already acquired it.
> These exceptions often appear in the logs and confuse users (see ISPN-1610), so it would be best to use special return values. We may also need a flag in the InvocationContext for StateTransferLockReacquisitionException.

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