StyleTang opened a new pull request #769:
URL: https://github.com/apache/rocketmq-externals/pull/769
## What is the purpose of the change
make RocketMQ console message trace compatible with older version RocketMQ
client
### Console message trace compatibility conclusion
* if have both subBefore and subAfter trace
* <=4.7.1 and > 4.9.0 endTimestamp use beginTimestamp + costTime
* 4.9.0 use real endTimestamp
* if subBefore is missing
* all version beginTimestamp and retryTime is missing
* <=4.7.1 and > 4.9.0 will lost endTimestamp and groupName **but 4.9.0
works well**
* if subAfter is missing
* all version endTimeStamp and status is missing
**Suggest add subAfter timestamp and groupName back to provide a better use
experience.**
https://github.com/apache/rocketmq/pull/3137
## Brief changelog
* handle old version client subBefore trace missing case
* handle old version client subAfter trace missing case
* missing value use N/A instead of --
* consume message trace use beginTime + costTime if don't have endTimestamp
## Verifying this change
### 4.9.0 (Current Version) Test
#### Have Both subBefore and subAfter
#### subBefore missing
#### subAfter missing
### <=4.7.1 and > 4.9.0 (now develop branch) Test
#### Have Both subBefore and subAfter
#### subBefore missing
#### subAfter missing
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