BePPPower opened a new pull request, #13086:
URL: https://github.com/apache/doris/pull/13086
# Proposed changes
Issue Number: close #xxx
I add the `backends` table into information_schema database.
The table schema of `backends` is:
```
MySQL > desc information_schema.backends;
+-----------------------+------------+------+-------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------------------+------------+------+-------+---------+-------+
| BackendId | BIGINT | Yes | false | NULL | |
| Cluster | VARCHAR(*) | Yes | false | NULL | |
| IP | VARCHAR(*) | Yes | false | NULL | |
| HeartbeatPort | INT | Yes | false | NULL | |
| BePort | INT | Yes | false | NULL | |
| HttpPort | INT | Yes | false | NULL | |
| BrpcPort | INT | Yes | false | NULL | |
| LastStartTime | VARCHAR(*) | Yes | false | NULL | |
| LastHeartbeat | VARCHAR(*) | Yes | false | NULL | |
| Alive | VARCHAR(*) | Yes | false | NULL | |
| SystemDecommissioned | VARCHAR(*) | Yes | false | NULL | |
| ClusterDecommissioned | VARCHAR(*) | Yes | false | NULL | |
| TabletNum | BIGINT | Yes | false | NULL | |
| DataUsedCapacity | VARCHAR(*) | Yes | false | NULL | |
| AvailCapacity | VARCHAR(*) | Yes | false | NULL | |
| TotalCapacity | VARCHAR(*) | Yes | false | NULL | |
| UsedPct | VARCHAR(*) | Yes | false | NULL | |
| MaxDiskUsedPct | VARCHAR(*) | Yes | false | NULL | |
| RemoteUsedCapacity | VARCHAR(*) | Yes | false | NULL | |
| Tag | VARCHAR(*) | Yes | false | NULL | |
| ErrMsg | VARCHAR(*) | Yes | false | NULL | |
| Version | VARCHAR(*) | Yes | false | NULL | |
| Status | VARCHAR(*) | Yes | false | NULL | |
+-----------------------+------------+------+-------+---------+-------+
```
**Usage:**
```
MySQL [(none)]> select * from information_schema.backends;
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------------------------------------------------------------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
| BackendId | Cluster | IP | HeartbeatPort | BePort |
HttpPort | BrpcPort | LastStartTime | LastHeartbeat | Alive |
SystemDecommissioned | ClusterDecommissioned | TabletNum | DataUsedCapacity |
AvailCapacity | TotalCapacity | UsedPct | MaxDiskUsedPct | RemoteUsedCapacity |
Tag | ErrMsg
| Version | Status
|
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------------------------------------------------------------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
| 103051 | default_cluster | 127.0.0.5 | 9222 | -1 |
-1 | -1 | \N | \N | false | false
| false | 0 | 0.000 | 1.000 B
| 0.000 | 0.00 % | 0.00 % | 0.000 | {"location" :
"default"} | java.net.ConnectException: 拒绝连接 (Connection refused) |
|
{"lastSuccessReportTabletsTime":"N/A","lastStreamLoadTime":-1,"isQueryDisabled":false,"isLoadDisabled":false}
|
| 10005 | default_cluster | 127.0.0.1 | 9159 | 9169 |
8149 | 8169 | 2022-09-30 14:50:48 | 2022-09-30 14:55:05 | true | false
| false | 2057 | 530.797 KB | 88.246 GB
| 1.961 TB | 95.60 % | 95.60 % | 0.000 | {"location"
: "default"} | |
doris-0.0.0-trunk-b5437463f | {"lastSuccessReportTabletsTime":"2022-09-30
14:54:10","lastStreamLoadTime":-1,"isQueryDisabled":false,"isLoadDisabled":false}
|
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------------------------------------------------------------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
```
```
MySQL [(none)]> select * from information_schema.backends where
Alive='true';
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
| BackendId | Cluster | IP | HeartbeatPort | BePort |
HttpPort | BrpcPort | LastStartTime | LastHeartbeat | Alive |
SystemDecommissioned | ClusterDecommissioned | TabletNum | DataUsedCapacity |
AvailCapacity | TotalCapacity | UsedPct | MaxDiskUsedPct | RemoteUsedCapacity |
Tag | ErrMsg | Version | Status
|
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
| 10005 | default_cluster | 127.0.0.1 | 9159 | 9169 |
8149 | 8169 | 2022-09-30 14:50:48 | 2022-09-30 14:56:05 | true | false
| false | 2057 | 530.797 KB | 88.246 GB
| 1.961 TB | 95.60 % | 95.60 % | 0.000 | {"location"
: "default"} | | doris-0.0.0-trunk-b5437463f |
{"lastSuccessReportTabletsTime":"2022-09-30
14:55:14","lastStreamLoadTime":-1,"isQueryDisabled":false,"isLoadDisabled":false}
|
+-----------+-----------------+-----------+---------------+--------+----------+----------+---------------------+---------------------+-------+----------------------+-----------------------+-----------+------------------+---------------+---------------+---------+----------------+--------------------+--------------------------+--------+-----------------------------+-------------------------------------------------------------------------------------------------------------------------------+
```
## Problem summary
Describe your changes.
## Checklist(Required)
1. Does it affect the original behavior:
- [ ] Yes
- [x] No
- [ ] I don't know
2. Has unit tests been added:
- [ ] Yes
- [ ] No
- [x] No Need
3. Has document been added or modified:
- [ ] Yes
- [ ] No
- [x] No Need
4. Does it need to update dependencies:
- [ ] Yes
- [x] No
5. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [x] No
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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