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Posted to commits@iotdb.apache.org by ta...@apache.org on 2023/03/09 08:06:52 UTC
[iotdb] branch master updated: [IOTDB-4497][Doc] Improve NodeStatus definition (#9256)
This is an automated email from the ASF dual-hosted git repository.
tanxinyu pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/iotdb.git
The following commit(s) were added to refs/heads/master by this push:
new 0664660e33 [IOTDB-4497][Doc] Improve NodeStatus definition (#9256)
0664660e33 is described below
commit 0664660e33ce398be99970b8b774bcc33eece25e
Author: YongzaoDan <33...@users.noreply.github.com>
AuthorDate: Thu Mar 9 16:06:45 2023 +0800
[IOTDB-4497][Doc] Improve NodeStatus definition (#9256)
---
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..5f3289a8a5 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 creatable for schema, but un-writable for data
+ - Data cannot be written to the cluster when all DataNodes are ReadOnly, but new Databases and schema is still creatable
+
+**For a DataNode**, the following table describes the impact of schema read, write, and deletion in different status:
+
+| DataNode status | readable | creatable | 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..6cbc46329a 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 可以创建元数据,不能写入数据
+ - 所有 DataNode 处于 ReadOnly 状态时,集群不能写入数据,仍可以创建 Database 和元数据
+
+**对于一个 DataNode**,不同状态元数据查询、创建、删除的影响如下表所示:
+
+| DataNode 状态 | 可读 | 可创建 | 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: