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Updated FAQ (markdown)

agapple
2018-07-31 17:49:37 +08:00
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FAQ.md

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问5： 出现no match ack position 或 batchId:73 is not the firstly:72 或 clientId:1001 batchId:50560 is not exist , please check
问5： 出现batchId:73 is not the firstly:72 或 clientId:1001 batchId:50560 is not exist , please check
答：
1. 前两个原因都是client在ack的问题，前两个异常是client没有按照顺序ack对应的batchId
1. 第一个原因都是client在ack的问题，前两个异常是client没有按照顺序ack对应的batchId
2. 最后一个是ack的batchId在服务端被清理了ps. 服务端发生清理只有两个原因：
* client发起过一次rollback
* server端发生过一次instance的重启，比如scan=true时发现文件变化自动restart了