[IOTDB-3316] Add SHOW CLUSTER implementation for IoTDB MPP mode

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: master branch
• Component/s: Core/Cluster
• Labels: pull-request-available
• Assignee: Gaofei Cao
• Reporter: Cao Gaofei
• Created: 29/May/22 09:54
• Updated: 31/May/22 09:12
• Resolved: 31/May/22 09:12

Description

1. After the preliminary discussion, the output format of 'SHOW CLUSTER' is as below.
 

NodeID	Role	Status	Host	Ports
0	DataNode	Running	192.168.10.100	{"rpc_port":"6667", "mpp_port":"6668", "internal_port":""}
1	ConfigNode	Running	192.168.10.101

And I have implemented this feature as below.

 

2. Some references of other distributed systems.

Clickhouse 'SELECT * FROM system.clusters', displays the information of 'shard_num、shard_weight、replica_num、host_name、host_address、port、is_local、user、default_database、errors_count及estimated_recovery_time'. 
 
┌─cluster───────────────┬─shard_num─┬─shard_weight┬─replica_num┬─host_name─┬─host_address─┬─port┬─is_local┬─user──┬─default_database┬─errors_count─┬─estimated_recovery_time┐
│ cluster_3shards_1replicas │ 1 │ 1 │ 1 │ node01 │ 192.168.10.100 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ cluster_3shards_1replicas │ 2 │ 1 │ 1 │ node02 │ 192.168.10.110 │ 9000 │ 0 │ default │ │ 0 │ 0 │
│ cluster_3shards_1replicas │ 3 │ 1 │ 1 │ node03 │ 192.168.10.120 │ 9000 │ 0 │ default │ │ 0 │ 0 │
│ test_cluster_two_shards │ 1 │ 1 │ 1 │ 127.0.0.1 │ 127.0.0.1 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ test_cluster_two_shards │ 2 │ 1 │ 1 │ 127.0.0.2 │ 127.0.0.2 │ 9000 │ 0 │ default │ │ 0 │ 0 │
│ test_cluster_two_shards_localhost │ 1 │ 1 │ 1 │ localhost │ ::1 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ test_cluster_two_shards_localhost │ 2 │ 1 │ 1 │ localhost │ ::1 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ test_shard_localhost │ 1 │ 1 │ 1 │ localhost │ ::1 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ test_shard_localhost_secure │ 1 │ 1 │ 1 │ localhost │ ::1 │ 9440 │ 0 │ default │ │ 0 │ 0 │
│ test_unavailable_shard │ 1 │ 1 │ 1 │ localhost │ ::1 │ 9000 │ 1 │ default │ │ 0 │ 0 │
│ test_unavailable_shard │ 2 │ 1 │ 1 │ localhost │ ::1 │ 1 │ 0 │ default │ │ 0 │ 0 │
└─────────────────────┴──────┴──────────────┴─────────────┴───────────┴────────────────┴──────┴───────────────────────────
3) TiDB 'tiup cluster display', displays the informations of 'ID、Role、Host、Ports、OS、Status、Data Dir、Deploy Dir'.

 

For Chinese developers, we can forward more information in the document link of FeiShu.

https://apache-iotdb.feishu.cn/docs/doccnfObLV57B9XQ0Tebg8N6Dqf#

 

Issue Links

• links to: GitHub Pull Request #6062