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Update 3.graph-service.md #1499

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Feb 23, 2022
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4 changes: 0 additions & 4 deletions docs-2.0/1.introduction/3.nebula-graph-architecture/3.graph-service.md
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Expand Up @@ -84,10 +84,6 @@ Validator 模块对生成的 AST 进行语义校验，主要包括：

如上图所示，探索到节点 `Filter` 时，发现依赖的节点是 `GetNeighbor`，匹配预先定义的规则，就会将 `Filter` 融入到 `GetNeighbor` 中，然后移除节点 `Filter`，继续匹配下一个规则。在执行阶段，当算子 `GetNeighbor` 调用 Storage 服务的接口获取一个点的邻边时，Storage 服务内部会直接将不符合条件的边过滤掉，这样可以极大地减少传输的数据量，该优化称为过滤下推。

!!! Note

Nebula Graph {{ nebula.release }} 默认没有打开优化。

## Executor

Executor 模块包含调度器（Scheduler）和执行器（Executor），通过调度器调度执行计划，让执行器根据执行计划生成对应的执行算子，从叶子节点开始执行，直到根节点结束。如下图所示。
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