forked from 4paradigm/OpenMLDB
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
482a37d
commit 866f3f3
Showing
3 changed files
with
86 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,42 @@ | ||
# SHOW COMPONENTS | ||
|
||
```sql | ||
SHOW COMPONENTS | ||
``` | ||
|
||
显示当前 OpenMLDB 系统的各个组件信息,包括 tablet, nameserver, task manager 和 api server。 | ||
|
||
|
||
|
||
Column Informations | ||
|
||
| Column | Description | | ||
| ------------ | ------------------------------------------------------------ | | ||
| Endpoint | component endpoint, same as `--endpoint` flag in openmldb | | ||
| Role | 组件角色。有 `tablet`,`nameserver`,`taskmanager`,`apiserver`, 同 `--role`flag in openmldb | | ||
| Connect_time | 组件连接时间,以毫秒时间戳形式展示 | | ||
| Status | 组件状态, `online`, `offline`or `NULL` | | ||
| Ns_role | Namserver 的角色,`master`or `standby` | | ||
|
||
注意:`SHOW COMPONETS` 目前仍有部分未完善的功能: | ||
|
||
- 不能展示 api server 信息 | ||
- 只能展示单个 task manager master 的信息,不能展示其他 slave 节点 | ||
- standalone 模式下 name server 的 connect time 不准确 | ||
|
||
# Example | ||
|
||
```sql | ||
> SHOW COMPONENTS; | ||
---------------- ------------ --------------- -------- --------- | ||
Endpoint Role Connect_time Status Ns_role | ||
---------------- ------------ --------------- -------- --------- | ||
127.0.0.1:9520 tablet 1654759517890 online NULL | ||
127.0.0.1:9521 tablet 1654759517942 online NULL | ||
127.0.0.1:9522 tablet 1654759517919 online NULL | ||
127.0.0.1:9622 nameserver 1654759519015 online master | ||
127.0.0.1:9623 nameserver 1654759521016 online standby | ||
127.0.0.1:9624 nameserver 1654759523030 online standby | ||
---------------- ------------ --------------- -------- --------- | ||
``` | ||
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
|
@@ -39,3 +39,5 @@ SHOW TABLES; | |
|
||
[USE DATABASE](../ddl/USE_DATABASE_STATEMENT.md) | ||
|
||
[SHOW TABLE STATUS](../ddl/SHOW_TABLE_STATUS.md) | ||
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,42 @@ | ||
# SHOW TABLE STATUS | ||
|
||
```sql | ||
SHOW TABLE STATUS | ||
``` | ||
|
||
展示当前使用的数据库或者所有数据库下 tables 的详细信息。如果未使用任何 database, `SHOW TABLE STATUS`展示所有数据库里 tables 的信息,不包括隐藏数据库;如果使用了特定 database, 只展示当前数据库下 tables 的信息。 | ||
|
||
|
||
|
||
Column Information | ||
|
||
| Column | Description | | ||
| ----------------- | ---------------------------------------------------------- | | ||
| Table_id | 表唯一 id | | ||
| Table_name | 表名 | | ||
| Database_name | 数据库名 | | ||
| Storage_type | 存储类型, `memory`,`ssd`,`hdd` | | ||
| Rows | 表的 rows count | | ||
| Memory_data_size | 表内存占用(单位 bytes) | | ||
| Disk_data_size | 表磁盘占用 (但我 bytes) | | ||
| Partition | Partiton 数量 | | ||
| Partition_unalive | Unalive partition 数量 | | ||
| Replica | Replica 数量 | | ||
| Offline_path | 表对应 offline 数据路径, `NULL` if not exists | | ||
| Offline_format | 表对应 offline 数据格式, `NULL` if not exists | | ||
| Offline_deep_copy | 表对应 offline 数据是否使用 deep copy, `NULL` if not exits | | ||
|
||
|
||
|
||
# Example | ||
|
||
```sql | ||
> USE db; | ||
> SHOW TABLE STATUS; | ||
---------- ------------ --------------- -------------- ------ ------------------ ---------------- ----------- ------------------- --------- -------------- ---------------- ------------------- | ||
Table_id Table_name Database_name Storage_type Rows Memory_data_size Disk_data_size Partition Partition_unalive Replica Offline_path Offline_format Offline_deep_copy | ||
---------- ------------ --------------- -------------- ------ ------------------ ---------------- ----------- ------------------- --------- -------------- ---------------- ------------------- | ||
6 t1 db memory 2 479 0 8 0 3 NULL NULL NULL | ||
---------- ------------ --------------- -------------- ------ ------------------ ---------------- ----------- ------------------- --------- -------------- ---------------- ------------------- | ||
``` | ||
|