bugfix: fix panic when sync reader needed to exit #760
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之前的sync读部分新增了优雅退出部分,但是存在一些缺陷,具体如下:
复现流程一:
复现流程二:
由于集群模式下是多协程同步,一个协程引发panic会导致其余协程存在数据同步不完全的问题,需要修复一下。