hankchan101 opened a new issue #1084: Ordered message with same shardingKey may parallel consume when it's repeat URL: https://github.com/apache/rocketmq/issues/1084 As the tittle said, In our business scene, I using the uniqueId as shardingKey to send Order Message. When the Consumer start, the processing is as follow: "select uniqueId from bussiness Database", if Not exist, INSERT, else UPDATE but, I found that the same uniqueId has double INSERT... So, after checking bussiness code, I guess Ordered message with same shardingKey may parallel consume when it's repeat
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