gaoyf opened a new pull request #720: if broadcasting consumer's offset file cannot write, read offset strategy change to MEMORY_FIRST_THEN_STORE when rebalancing. URL: https://github.com/apache/rocketmq/pull/720 ## What is the purpose of the change Restarted Broadcasting consumer can use broker's max offset if cannot persist offset to local file. ## Brief changelog Broadcasting consumer reads offset from memory first then from store when rebalancing. ## Verifying this change I have testd this like bellow: 1 Use user 'www' to consume message broadcasting. 2 Modify one record of offset file to smaller than broker and chmod local offset file to user 'root' and change permission to read only. 3 Use my modified code, the consumer can consume message normally. github issue: https://github.com/apache/rocketmq/issues/719
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