[jira] [Comment Edited] (ROCKETMQ-124) Support non-redundant message delivery mechanism

["vongosling (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ROCKETMQ-124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368811#comment-16368811 ] 

vongosling edited comment on ROCKETMQ-124 at 2/23/18 3:20 AM:
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[~lahiruj]

How are things going ?

I would like to help you for this topic in the CSoC, If you have any technical question, we could also use the RocketMQ dev email[1] list to discuss.

 

[1]http://rocketmq.apache.org/about/contact/

 

p.s. you could subscribe our Development channel on my provided button


was (Author: lahiruj):
Hi, 

I am Lahiru Jayathilake, a final year undergraduate from Computer Science and Engineering Department, University of Moratuwa. I am looking forward to participating in GSoC 2018, and I am interested in this project. I have already started to go through the documentation and to set-up the dev environment.

> Support non-redundant message delivery mechanism
> ------------------------------------------------
>
>                 Key: ROCKETMQ-124
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-124
>             Project: Apache RocketMQ
>          Issue Type: Wish
>          Components: rocketmq-broker, rocketmq-client, rocketmq-store
>            Reporter: yukon
>            Priority: Minor
>              Labels: gsoc2018
>
> The duplicated messages are worrisome. It will cost much if the user needs non-repeating messages.
> In most cases, the user need store the consumer records to judge a message is replicated or not, and the store stage should guarantee strong consistency. As you see, it's very complicated, so support a strict and non-redundant message delivery mechanism is impending.
> In this context, we hope to design a delivery once plugin, say, you could design a global(but need raft guarantee multi-copy data) storage, using the hooker of RocketMQ ConsumeMessageHook to finish the task.



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