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Posted to issues@rocketmq.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2017/02/16 05:33:41 UTC

[jira] [Commented] (ROCKETMQ-102) When shutdown(), the persisted offet is not the latest consumed message, which may cause repeated messages

    [ https://issues.apache.org/jira/browse/ROCKETMQ-102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15869252#comment-15869252 ] 

ASF GitHub Bot commented on ROCKETMQ-102:
-----------------------------------------

GitHub user Jaskey opened a pull request:

    https://github.com/apache/incubator-rocketmq/pull/64

    [ROCKETMQ-102] When shutdown(), the persisted offet is not the latest consumed message, which may cause repeated messages.

    Solution: add interface for push consumer to accept await termination time to await consuming.
    
    JIRA: https://issues.apache.org/jira/browse/ROCKETMQ-102

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/Jaskey/incubator-rocketmq ROCKETMQ-102-shutdown-await

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-rocketmq/pull/64.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #64
    
----
commit 7dd5f353eb926a6af4e9519a69077a463ea75b50
Author: Jaskey <li...@gmail.com>
Date:   2017-02-16T05:32:40Z

    [ROCKETMQ-102] When shutdown(), the persisted offet is not the latest consumed message, which may cause repeated messages.
    Add interface for push consumer to accept await termination time to await consuming,

----


> When shutdown(), the persisted offet is not the latest consumed message, which may cause repeated messages
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: ROCKETMQ-102
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-102
>             Project: Apache RocketMQ
>          Issue Type: Improvement
>          Components: rocketmq-client
>            Reporter: Jaskey Lam
>            Assignee: Xiaorui Wang
>
> When shutdown push consumer, push consumer will shutdwon thread pool then persist offset.
> While shutdown thread pool is only stop submiting message to consume, which does not stop consuming message which exists in the the thread queue or is already being consumed.
> Which will cause repeated message very easily though user are shutdown gracefully according to the provided interface.
> A way to solve this problem is needed. Such as accpet a param that how long to wait for thread pool to terminated.



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