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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/10/01 04:30:22 UTC

[GitHub] [rocketmq] codersfarm commented on issue #5235: Broker may lost messages in extreme condition

codersfarm commented on issue #5235:
URL: https://github.com/apache/rocketmq/issues/5235#issuecomment-1264239184

   In most case, the data in pageCache , it is safe.
   When the message is in MappedByteBuffer or FileChannel, RocketMQ think the message is safe. 
   Java Program call flush(), then system flush data from pageCache to disk( it  only depends  on system)
   


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