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8fb5f978
编写于
11月 02, 2021
作者:
E
edward.zeng
提交者:
GitHub
11月 02, 2021
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[skip ci] Refine milvus index design doc (#11104)
Signed-off-by:
N
Edward Zeng
<
jie.zeng@zilliz.com
>
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@@ -15,7 +15,7 @@ The following figure shows the design of the indexCoord component:
## 8.1 Use etcd as a reliable service
Based on etcd service discovery, IndexCoord component
s
, like other Milvus components, rely on etcd to implement
Based on etcd service discovery, IndexCoord component, 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 service discovery, Milvus also uses etcd as a reliable meta storage, and writes all
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@@ -40,8 +40,8 @@ IndexCoord has another background process that periodically queries the index ta
When the index task is marked as deleted, and the index status is complete, the corresponding index task is actually
deleted from the MetaTable.
When IndexCoord receives a query index status request from other components, first check whether the corresponding
index task is marked for deletion in the MetaTable. If marked for deletion,
the return
index does not exist, otherwise,
When IndexCoord receives a query index status request from other components,
it will
first check whether the corresponding
index task is marked for deletion in the MetaTable. If marked for deletion,
it returns
index does not exist, otherwise,
it returns the index information.
## 8.3 Feature Design
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