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[skip ci] Fix typo in datanode recovery design doc (#11439) 

Signed-off-by: Edward Zeng <jie.zeng@zilliz.com>
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edward.zeng 2021-11-08 18:51:08 +08:00 committed by GitHub
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docs/design_docs/datanode_recovery_design_0513_2021.md
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@ -39,7 +39,7 @@ The detailed design can be found at [datanode flowgraph recovery design](datanod
After DataNode subscribes to a stateful vchannel, DataNode starts to work, or more specifically, flowgraph starts to work.
Vchannel is stateful because we don't want to process twice what's already processed. And a "processed" message means its
already persistant. In DataNode's terminology, a message is processed if it's been flushed.
already persistent. In DataNode's terminology, a message is processed if it's been flushed.
DataCoord tells DataNode stateful vchannel info through RPC `WatchDmChannels`, so that DataNode won't process
the same messages over and over again. So flowgraph needs ability to consume messages in the middle of a vchannel.