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[skip ci] Fix typo in segcore doc (#11827) 

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>
pull/11846/head
Jael Gu 2021-11-15 19:51:47 +08:00 committed by GitHub
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docs/design_docs/segcore/visitor.md
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@ -14,7 +14,7 @@ Visitor Pattern is used in segcore for parse and execute Execution Plan.
Currently, under `${core/query/visitors}` directory, there are following visitors:
1. `ShowPlanNodeVisitor` print PlanNode in json
2. `ShowExprVisitor` Expr -> json
3. `Verify...Visitor` validate ...
4. `ExtractInfo...Visitor` extract info from... ，including involved_fields and else
5. `ExecExprVisitor` Generate bitmask according to expression
6. `ExecPlanNodeVistor` physical plan executor, for now only support ANNS node.
3. `Verify...Visitor` validates ...
4. `ExtractInfo...Visitor` extracts info from... ，including involved_fields and else
5. `ExecExprVisitor` generates bitmask according to expression
6. `ExecPlanNodeVistor` physical plan executor only supports ANNS node for now