From 910e1bb963f129b56fbcb17c666ae9acc8ea4c02 Mon Sep 17 00:00:00 2001 From: yanliang567 <82361606+yanliang567@users.noreply.github.com> Date: Fri, 15 Oct 2021 18:42:36 +0800 Subject: [PATCH] [skip ci]Refine index design doc (#9976) Signed-off-by: yanliang567 --- docs/design_docs/index_design.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/docs/design_docs/index_design.md b/docs/design_docs/index_design.md index af25cc21c4..07d8f279eb 100644 --- a/docs/design_docs/index_design.md +++ b/docs/design_docs/index_design.md @@ -5,11 +5,11 @@ update: 7.31.2021, by [Cai.Zhang](https://github.com/xiaocai2333) ## 8.0 Component Description IndexCoord is a component responsible for scheduling index construction tasks and maintaining index status. -IndexCoord accepts requests from rootcoord to build indexes, delete indexes, and query index information. +IndexCoord accepts requests from rootCoord to build indexes, delete indexes, and query index information. IndexCoord is responsible for assigning IndexBuildID to the request to build the index, and forwarding the request to build the index to IndexNode. IndexCoord records the status of the index, and the index file. -The following figure shows the design of the indexcoord component: +The following figure shows the design of the indexCoord component: ![indexcoord](graphs/indexcoord_design.png) @@ -18,7 +18,7 @@ The following figure shows the design of the indexcoord component: Based on etcd service discovery, IndexCoord components, like other Milvus components, rely on etcd to implement service discovery. IndexCoord relies on the lease mechanism of etcd to sense the online and offline news of IndexNode. -In addition to being used for service discovery, Milvus also uses etcd as a reliable meta storage, and writes all +In addition to service discovery, Milvus also uses etcd as a reliable meta storage, and writes all persistent status information to etcd. The purpose is to restore a certain Milvus component to its original state after power off and restart.