THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
0.8:
1. Topic registration info:
/brokers/topics/[topic] :
Schema:
{ "fields" :
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "partitions",
"type": {"type": "map",
"values": {"type": "array", "items": "int", "doc": "a list of replica ids"},
"doc": "a map from partition id to replica list"},
}
]
}
Example:
{
"version": 1,
"partitions": {"0": [0, 1, 3] } }
}
2. Partition state info:
/brokers/topics/[topic]/partitions/[partitionId]/state
Schema:
{ "fields":
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "isr",
"type": {"type": "array",
"items": "int",
"doc": "an array of the id of replicas in isr"}
},
{"name": "leader", "type": "int", "doc": "id of the leader replica"},
{"name": "controller_epoch", "type": "int", "doc": "epoch of the controller that last updated the leader and isr info"},
{"name": "leader_epoch", "type": "int", "doc": "epoch of the leader"}
]
}
Example:
{
"version": 1,
"isr": [0,1],
"leader": 0,
"controller_epoch": 1,
"leader_epoch": 0
}
3. Broker registration info:
/brokers/ids/[brokerId]
Schema:
{ "fields":
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "host", "type": "string", "doc": "ip address or host name of the broker"},
{"name": "port", "type": "int", "doc": "port of the broker"},
{"name": "jmx_port", "type": "int", "doc": "port for jmx"}
]
}
Example:
{
"version": 1,
"host": "192.168.1.148",
"port": 9092,
"jmx_port": 9999
}
4. Controller epoch:
/controller_epoch -> int (epoch)
5. Controller registration:
/controller -> int (broker id of the controller)
6. Consumer registration:
/consumers/[groupId]/ids/[consumerId]
Schema:
{ "fields":
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "pattern", "type": "string", "doc": "can be of static, white_list or black_list"},
{"name": "subscription", "type" : {"type": "map", "values": {"type": "int"},
"doc": "a map from a topic or a wildcard pattern to the number of streams"} } ]
}
Example:
A static subscription:
{
"version": 1,
"pattern": "static",
"subscription": {"topic1": 1, "topic2": 2}
}
A whitelist subscription:
{
"version": 1,
"pattern": "white_list",
"subscription": {"abc": 1}}
A blacklist subscription:
{
"version": 1,
"pattern": "black_list",
"subscription": {"abc": 1}}
7. Consumer owner:
/consumers/[groupId]/owners/[topic]/[partitionId] -> string (consumerId)
8. Consumer offset:
/consumers/[groupId]/offsets/[topic]/[partitionId] -> long (offset)
9. Re-assign partitions
/admin/reassign_partitions
{
"fields":[
{
"name":"version",
"type":"int",
"doc":"version id"
},
{
"name":"partitions",
"type":{
"type":"array",
"items":{
"fields":[
{
"name":"topic",
"type":"string",
"doc":"topic of the partition to be reassigned"
},
{
"name":"partition",
"type":"int",
"doc":"the partition to be reassigned"
},
{
"name":"replicas",
"type":"array",
"items":"int",
"doc":"a list of replica ids"
}
],
}
"doc":"an array of partitions to be reassigned to new replicas"
}
}
]
}
Example:
{
"version": 1,
"partitions":
[
{
"topic": "Foo",
"partition": 1,
"replicas": [0, 1, 3]
}
]
}
10. Preferred replication election
/admin/preferred_replica_election
{
"fields":[
{
"name":"version",
"type":"int",
"doc":"version id"
},
{
"name":"partitions",
"type":{
"type":"array",
"items":{
"fields":[
{
"name":"topic",
"type":"string",
"doc":"topic of the partition for which preferred replica election should be triggered"
},
{
"name":"partition",
"type":"int",
"doc":"the partition for which preferred replica election should be triggered"
}
],
}
"doc":"an array of partitions for which preferred replica election should be triggered"
}
}
]
}
Example:
{
"version": 1,
"partitions":
[
{
"topic": "Foo",
"partition": 1
},
{
"topic": "Bar",
"partition": 0
}
]
}
11. Delete topics
/admin/delete_topics/[topic_to_be_deleted] (the value of the path in empty)
0.8.1
Topic Configuration
/config/topics/[topic_name]
Example
{
"version": 1,
"config": {
"config.a": "x",
"config.b": "y",
...
}
}
/config/changes/[config_change_x] -> "topic_name"
Contains the name of the topic that changed.
0.9.0
Client and Topic configuration overrides: The content of both znodes has the same structure
/config/clients/[topic_name]
/config/topics/[topic_name]
{
"version": 1,
"config": {
"config.a": "x",
"config.b": "y",
...
}
}
Config Change notification (Topic and Client config)
{"version" : 1, "entity_type":"topics/clients", "entity_name" : "topic_name/client_id"}
ISR Change notification
/isr_change_notification/isr_change_x
Gets created when ISR is changed at any broker, controller watches for these notifications and sends MetadataUpdateRequest to all brokers.
Broker registration info
/brokers/ids/[brokerId]
Schema:
{ "fields":
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "host", "type": "string", "doc": "ip address or host name of the broker"},
{"name": "port", "type": "int", "doc": "port of the broker"},
{"name": "jmx_port", "type": "int", "doc": "port for jmx"}
{"name": "endpoints", "type": "array", "items": "string", "doc": "endpoints supported by the broker"}
]
}
Example:
{
"version":2,
"host","localhost",
"port",9092
"jmx_port":9999,
"timestamp":"2233345666",
"endpoints": ["PLAINTEXT://host1:9092", "SSL://host1:9093"]
}
0.10
Broker registration info
/brokers/ids/[brokerId]
Schema:
{ "fields":
[ {"name": "version", "type": "int", "doc": "version id"},
{"name": "host", "type": "string", "doc": "ip address or host name of the broker"},
{"name": "port", "type": "int", "doc": "port of the broker"},
{"name": "jmx_port", "type": "int", "doc": "port for jmx"}
{"name": "endpoints", "type": "array", "items": "string", "doc": "endpoints supported by the broker"}
{"name": "rack", "type": "string", "doc": "Rack of the broker. Optional. This will be used in rack aware replication assignment for fault tolerance."}
]
}
Example:
{
"version":3,
"host":"localhost",
"port":9092,
"jmx_port":9999,
"timestamp":"2233345666",
"endpoints": ["PLAINTEXT://host1:9092", "SSL://host1:9093"],
"rack": "us-east-1c"
}