[iotdb] branch master updated: Update MetadataIndexTree graph (#1812)

[qiaojialin]

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The following commit(s) were added to refs/heads/master by this push:
     new ec0d69c  Update MetadataIndexTree graph (#1812)
ec0d69c is described below

commit ec0d69c74b72161ff54273a8967753dfa402ccbc
Author: Zesong Sun <sz...@mails.tsinghua.edu.cn>
AuthorDate: Fri Oct 9 22:13:54 2020 +0800

    Update MetadataIndexTree graph (#1812)
---
 docs/SystemDesign/TsFile/Format.md    | 2 +-
 docs/zh/SystemDesign/TsFile/Format.md | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/SystemDesign/TsFile/Format.md 
b/docs/SystemDesign/TsFile/Format.md
index cb549e2..c8fccf2 100644
--- a/docs/SystemDesign/TsFile/Format.md
+++ b/docs/SystemDesign/TsFile/Format.md
@@ -212,7 +212,7 @@ The max degree of the metadata index tree (that is, the max 
number of each node'
 
 1 device with 150 measurements: The number of measurements exceeds 
`max_degree_of_index_node`, so the tree has only measurement index level by 
default. In this level, each MetadataIndexNode is composed of no more than 10 
MetadataIndex entries. The nodes that point to `TimeseriesMetadata` directly 
are `LEAF_MEASUREMENT` type. Other nodes and root node of index tree are not 
leaf nodes of measurement index level, so they are `INTERNAL_MEASUREMENT` type.
 
-<img style="width:100%; max-width:800px; max-height:600px; margin-left:auto; 
margin-right:auto; display:block;" 
src="https://user-images.githubusercontent.com/19167280/81935182-cd8f5a80-9622-11ea-8e41-661a5219974b.png";>
+<img style="width:100%; max-width:800px; max-height:600px; margin-left:auto; 
margin-right:auto; display:block;" 
src="https://user-images.githubusercontent.com/19167280/95592841-c0fd1a00-0a7b-11eb-9b46-dfe8b2f73bfb.png";>
 
 150 device with 1 measurement each: The number of devices exceeds 
`max_degree_of_index_node`, so the device index level and measurement index 
level of the tree are both formed. In these two levels, each MetadataIndexNode 
is composed of no more than 10 MetadataIndex entries. The nodes that point to 
`TimeseriesMetadata` directly are `LEAF_MEASUREMENT` type. The root nodes of 
measurement index level are also the leaf nodes of device index level, which 
are `LEAF_DEVICE` type. Other nodes and [...]
 
diff --git a/docs/zh/SystemDesign/TsFile/Format.md 
b/docs/zh/SystemDesign/TsFile/Format.md
index c3d8377..308f222 100644
--- a/docs/zh/SystemDesign/TsFile/Format.md
+++ b/docs/zh/SystemDesign/TsFile/Format.md
@@ -212,7 +212,7 @@ PageHeader 结构
 
 在1个设备，设备中有150个传感器的情况下，传感器个数超过了 
`max_degree_of_index_node`，元数据索引树有默认的传感器层级。在这个层级里，每个 MetadataIndexNode 最多由10个 
MetadataIndexEntry 组成。直接指向 `TimeseriesMetadata`的节点类型均为 
`LEAF_MEASUREMENT`；而后续产生的中间节点和根节点不是传感器索引层级的叶子节点，这些节点是 `INTERNAL_MEASUREMENT`。
 
-<img style="width:100%; max-width:800px; max-height:600px; margin-left:auto; 
margin-right:auto; display:block;" 
src="https://user-images.githubusercontent.com/19167280/81935182-cd8f5a80-9622-11ea-8e41-661a5219974b.png";>
+<img style="width:100%; max-width:800px; max-height:600px; margin-left:auto; 
margin-right:auto; display:block;" 
src="https://user-images.githubusercontent.com/19167280/95592841-c0fd1a00-0a7b-11eb-9b46-dfe8b2f73bfb.png";>
 
 在150个设备，每个设备中有1个传感器的情况下，设备个数超过了 
`max_degree_of_index_node`，形成元数据索引树的传感器层级和设备索引层级。在这两个层级里，每个 MetadataIndexNode 
最多由10个 MetadataIndexEntry 组成。直接指向 `TimeseriesMetadata` 的节点类型为 
`LEAF_MEASUREMENT`，传感器索引层级的根节点同时作为设备索引层级的叶子节点，其节点类型为 
`LEAF_DEVICE`；而后续产生的中间节点和根节点不是设备索引层级的叶子节点，因此节点类型为 `INTERNAL_DEVICE`。