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https://issues.apache.org/jira/browse/ROCKETMQ-105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jaskey Lam updated ROCKETMQ-105:
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Description:
This issue does not affect any functionality=ies, but it indeed is a problem
for user to understand the principle of RocketMQ.
- ConsumerOffset:
User might consider `ConsumerOffset` is the offset where consumer has consumed.
for example if CG1 have a consumer offset 100 of topicA-q1, I may propabaly
consider message with offset 100 has been cosumed. But actully, it is not. The
message with offset 100 is the next target offset to pull from.
- Max Offset
User might consider this is the offset of the latest message in a queue. But it
is not, it is indicating that next offset when new message arrived.
If possible , any of the below two things should be taken into consideration
1. the implementaion should be changed to be closer to the presentative
judgment of human
2. rename the concept to clarify how it really implemented.
was:
This issue does not affect any functionality=ies, but it indeed is a problem
for user to understand the principle of RocketMQ.
- ConsumerOffset:
User might consider `ConsumerOffset` is the offset where consumer has consumed.
for example if CG1 have a consumer offset 100 of topicA-q1, I may propabaly
consider message with offset 100 has been cosumed. But actully, it is not. The
message with offset 100 is the next target when I pull from.
- Max Offset
User might consider this is the offset of the latest message in a queue. But it
is not, it is indicating that next offset when new message arrived.
If possible , any of the below two things should be taken into consideration
1. the implementaion should be changed to be closer to the presentative
judgment of human
2. rename the concept to clarify how it really implemented.
> Implementation of consumerOffset and maxOffset are counter-intuitive
> --------------------------------------------------------------------
>
> Key: ROCKETMQ-105
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-105
> Project: Apache RocketMQ
> Issue Type: Wish
> Components: rocketmq-broker, rocketmq-client, rocketmq-store
> Affects Versions: 4.0.0-incubating
> Reporter: Jaskey Lam
> Assignee: yukon
> Priority: Minor
>
> This issue does not affect any functionality=ies, but it indeed is a problem
> for user to understand the principle of RocketMQ.
> - ConsumerOffset:
> User might consider `ConsumerOffset` is the offset where consumer has
> consumed. for example if CG1 have a consumer offset 100 of topicA-q1, I may
> propabaly consider message with offset 100 has been cosumed. But actully, it
> is not. The message with offset 100 is the next target offset to pull from.
> - Max Offset
> User might consider this is the offset of the latest message in a queue. But
> it is not, it is indicating that next offset when new message arrived.
> If possible , any of the below two things should be taken into consideration
> 1. the implementaion should be changed to be closer to the presentative
> judgment of human
> 2. rename the concept to clarify how it really implemented.
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