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[skip ci]Update datanode recovery design (#11485) 

Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
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yanliang567 2021-11-09 19:38:42 +08:00 committed by GitHub
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docs/design_docs/datanode_recovery_design_0513_2021.md
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@ -38,7 +38,7 @@ 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
Vchannel is stateful because we don't want to process twice what's already processed, as a "processed" message means its
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
@ -48,7 +48,7 @@ DataNode tells DataCoord vchannel states after each flush through RPC `SaveBinlo
keeps the vchannel states update.
## Some of the following interface/proto designs are outdated, will be updated soon
## Some interface/proto designs below are outdated, will be updated soon
### 1. DataNode no longer interacts with etcd except service registering