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Posted to commits@iotdb.apache.org by yo...@apache.org on 2023/03/09 07:23:04 UTC
[iotdb] branch Improve-NodeStatus-definition created (now 70ff1c3956)
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yongzao pushed a change to branch Improve-NodeStatus-definition
in repository https://gitbox.apache.org/repos/asf/iotdb.git
at 70ff1c3956 Finish
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[iotdb] 01/01: Finish
Posted by yo...@apache.org.
This is an automated email from the ASF dual-hosted git repository.
yongzao pushed a commit to branch Improve-NodeStatus-definition
in repository https://gitbox.apache.org/repos/asf/iotdb.git
commit 70ff1c3956f7d75de26e888dc1054b7f28df27f6
Author: YongzaoDan <53...@qq.com>
AuthorDate: Thu Mar 9 15:22:54 2023 +0800
Finish
---
docs/UserGuide/Cluster/Cluster-Maintenance.md | 15 +++++++++++++--
docs/zh/UserGuide/Cluster/Cluster-Maintenance.md | 21 ++++++++++++++++-----
2 files changed, 29 insertions(+), 7 deletions(-)
diff --git a/docs/UserGuide/Cluster/Cluster-Maintenance.md b/docs/UserGuide/Cluster/Cluster-Maintenance.md
index 0d61b46914..2c4430512b 100644
--- a/docs/UserGuide/Cluster/Cluster-Maintenance.md
+++ b/docs/UserGuide/Cluster/Cluster-Maintenance.md
@@ -136,8 +136,19 @@ The DataNode statuses are defined as follows:
- The cluster is still readable and writable if some DataNodes are Removing
- **ReadOnly**: The remaining disk space of DataNode is lower than disk_warning_threshold(default is 5%), the DataNode is readable but un-writable and cannot synchronize data.
- The cluster is still readable and writable if some DataNodes are ReadOnly
- - Schema, data and Database can be deleted in ReadOnly status
- - Schema and data cannot be written to the cluster when all DataNodes are ReadOnly, but new Databases can still be created
+ - The schema and data in a ReadOnly DataNode is readable
+ - The schema and data in a ReadOnly DataNode is deletable
+ - A ReadOnly DataNode is writable for schema, but un-writable for data
+ - Data cannot be written to the cluster when all DataNodes are ReadOnly, but schema is still writable and new Databases can be created
+
+**For a DataNode**, the following table describes the impact of schema read, write, and deletion in different status:
+
+| DataNode status | readable | writable | deletable |
+|-----------------|----------|----------|-----------|
+| Running | yes | yes | yes |
+| Unknown | no | no | no |
+| Removing | no | no | no |
+| ReadOnly | yes | yes | yes |
**For a DataNode**, the following table describes the impact of data read, write, and deletion in different status:
diff --git a/docs/zh/UserGuide/Cluster/Cluster-Maintenance.md b/docs/zh/UserGuide/Cluster/Cluster-Maintenance.md
index 13d886631a..cade503999 100644
--- a/docs/zh/UserGuide/Cluster/Cluster-Maintenance.md
+++ b/docs/zh/UserGuide/Cluster/Cluster-Maintenance.md
@@ -132,13 +132,24 @@ DataNode 的状态机如下图所示：
- **Running**: DataNode 正常运行，可读可写
- **Unknown**: DataNode 未正常上报心跳，ConfigNode 认为该 DataNode 不可读写
- - 少数 DataNode Unknown 不影响集群读写
+ - 少数 Unknown DataNode 不影响集群读写
- **Removing**: DataNode 正在移出集群，不可读写
- - 少数 DataNode Removing 不影响集群读写
+ - 少数 Removing DataNode 不影响集群读写
- **ReadOnly**: DataNode 磁盘剩余空间低于 disk_warning_threshold（默认 5%），DataNode 可读但不能写入，不能同步数据
- - 少数 DataNode ReadOnly 不影响集群读写
- - ReadOnly 状态下可以删除元数据和数据，可以删除 Database
- - 所有 DataNode 处于 ReadOnly 状态时，集群不可写入元数据和数据，仍可以创建 Database
+ - 少数 ReadOnly DataNode 不影响集群读写
+ - ReadOnly DataNode 可以查询元数据和数据
+ - ReadOnly DataNode 可以删除元数据和数据
+ - ReadOnly DataNode 可以写入元数据，不能写入数据
+ - 所有 DataNode 处于 ReadOnly 状态时，集群不能写入数据，仍可以可以写入元数据和创建 Database
+
+**对于一个 DataNode**，不同状态元数据查询、写入、删除的影响如下表所示：
+
+| DataNode 状态 | 可读 | 可写 | 可删除 |
+|-------------|-----|-----|-----|
+| Running | 是 | 是 | 是 |
+| Unknown | 否 | 否 | 否 |
+| Removing | 否 | 否 | 否 |
+| ReadOnly | 是 | 是 | 是 |
**对于一个 DataNode**，不同状态数据查询、写入、删除的影响如下表所示：