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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/10/09 01:15:10 UTC

[GitHub] [rocketmq] frankcrc commented on issue #5174: index timeDiff precision missing may cause resend failed

frankcrc commented on issue #5174:
URL: https://github.com/apache/rocketmq/issues/5174#issuecomment-1272426200

   Sorry, I confused timestamp in `UNIQ_KEY` with `bornTimestamp`. 
   
   In my environment, mq's version of broker and client are differnect. so `viewMessage` might encounter exception, I means `org.apache.rocketmq.common.message.MessageDecoder#decodeMessageId`.  This commit may be related, [c7c9601d](https://github.com/apache/rocketmq/commit/c7c9601d36d0179ae69592e541764b04130cf790#diff-da0b74e72334fbe4c8f96d48e86981af939efb20fb76554f93ae6eb9a38982b7L60-L64).
   
   Then,
   1.`org.apache.rocketmq.client.impl.MQAdminImpl#viewMessage` will throw "query message by id finished, but no message" exception, or
   2.`org.apache.rocketmq.tools.admin.DefaultMQAdminExtImpl#viewMessage(java.lang.String, java.lang.String)` will call `queryMessageByUniqKey`. In `queryMessageByUniqKey`, you can see 
   ```
   // which is begin
   // my misunderstood bornTimestamp - 1000
   MessageClientIDSetter.getNearlyTimeFromID(uniqKey).getTime() - 1000
   ```


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