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[skip ci]Update typo in index design md (#13247) 

Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
pull/13292/head
yanliang567 2021-12-13 19:47:32 +08:00 committed by GitHub
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docs/design_docs/index_design.md
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@ -78,8 +78,8 @@ restarted, we write the MetaTable information into etcd. When the IndexCoord ser
existing Meta information from etcd, and then monitor the changes of Meta through watchNodeLoop. In order to distinguish
whether the modification of Meta was initiated by IndexCoord or IndexNode, revision was introduced in Meta.
When watchMetaLoop detects that the Meta in etcd is updated, compare the revision in Meta with the Event.Kv.Version
of the etcd event. If the revision is equal to Event.Kv.Version, it means that the update was initiated by IndexCoord.
If the revision is less than Event. .Kv.Version means that this Meta update was initiated by IndexNode, and IndexCoord
of the etcd event. If the revision equals to Event.Kv.Version, it means that the update was initiated by IndexCoord.
If the revision is less than Event.Kv.Version, it means that this Meta update was initiated by IndexNode, and IndexCoord
needs to update Meta. There will be no situation where revision is greater than Event.Kv.Version.
In order to prevent IndexNode from appearing in a suspended animation state, Version is introduced. When IndexCoord