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The ResourceManager REST API's allow the user to get information about the cluster - status on the cluster, metrics on the cluster, scheduler information, information about nodes in the cluster, and information about applications on the cluster.
The cluster information resource provides overall information about the cluster.
Both of the following URI's give you the cluster information.
* http://<rm http address:port>/ws/v1/cluster * http://<rm http address:port>/ws/v1/cluster/info
| Item | Data Type | Description |
|---|---|---|
| id | long | The cluster id |
| startedOn | long | The time the cluster started (in ms since epoch) |
| state | string | The ResourceManager state - valid values are: NOTINITED, INITED, STARTED, STOPPED |
| resourceManagerVersion | string | Version of the ResourceManager |
| resourceManagerBuildVersion | string | ResourceManager build string with build version, user, and checksum |
| resourceManagerVersionBuiltOn | string | Timestamp when ResourceManager was built (in ms since epoch) |
| hadoopVersion | string | Version of hadoop common |
| hadoopBuildVersion | string | Hadoop common build string with build version, user, and checksum |
| hadoopVersionBuiltOn | string | Timestamp when hadoop common was built(in ms since epoch) |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/info
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"clusterInfo":
{
"id":1324053971963,
"startedOn":1324053971963,
"state":"STARTED",
"resourceManagerVersion":"0.23.1-SNAPSHOT",
"resourceManagerBuildVersion":"0.23.1-SNAPSHOT from 1214049 by user1 source checksum 050cd664439d931c8743a6428fd6a693",
"resourceManagerVersionBuiltOn":"Tue Dec 13 22:12:48 CST 2011",
"hadoopVersion":"0.23.1-SNAPSHOT",
"hadoopBuildVersion":"0.23.1-SNAPSHOT from 1214049 by user1 source checksum 11458df3bb77342dca5f917198fad328",
"hadoopVersionBuiltOn":"Tue Dec 13 22:12:26 CST 2011"
}
}XML response
HTTP Request:
Accept: application/xml GET http://<rm http address:port>/ws/v1/cluster/info
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 712 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <clusterInfo> <id>1324053971963</id> <startedOn>1324053971963</startedOn> <state>STARTED</state> <resourceManagerVersion>0.23.1-SNAPSHOT</resourceManagerVersion> <resourceManagerBuildVersion>0.23.1-SNAPSHOT from 1214049 by user1 source checksum 050cd664439d931c8743a6428fd6a693</resourceManagerBuildVersion> <resourceManagerVersionBuiltOn>Tue Dec 13 22:12:48 CST 2011</resourceManagerVersionBuiltOn> <hadoopVersion>0.23.1-SNAPSHOT</hadoopVersion> <hadoopBuildVersion>0.23.1-SNAPSHOT from 1214049 by user1 source checksum 11458df3bb77342dca5f917198fad328</hadoopBuildVersion> <hadoopVersionBuiltOn>Tue Dec 13 22:12:48 CST 2011</hadoopVersionBuiltOn> </clusterInfo>
The cluster metrics resource provides some overall metrics about the cluster. More detailed metrics should be retrieved from the jmx interface.
| Item | Data Type | Description |
|---|---|---|
| appsSubmitted | int | The number of applications submitted |
| appsCompleted | int | The number of applications completed |
| appsPending | int | The number of applications pending |
| appsRunning | int | The number of applications running |
| appsFailed | int | The number of applications failed |
| appsKilled | int | The number of applications killed |
| reservedMB | long | The amount of memory reserved in MB |
| availableMB | long | The amount of memory available in MB |
| allocatedMB | long | The amount of memory allocated in MB |
| totalMB | long | The amount of total memory in MB |
| containersAllocated | int | The number of containers allocated |
| containersReserved | int | The number of containers reserved |
| containersPending | int | The number of containers pending |
| totalNodes | int | The total number of nodes |
| activeNodes | int | The number of active nodes |
| lostNodes | int | The number of lost nodes |
| unhealthyNodes | int | The number of unhealthy nodes |
| decommissionedNodes | int | The number of nodes decommissioned |
| rebootedNodes | int | The number of nodes rebooted |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/metrics
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"clusterMetrics":{
"appsSubmitted":0,
"appsCompleted":0,
"appsPending":0,
"appsRunning":0,
"appsFailed":0,
"appsKilled":0,
"reservedMB":0,
"availableMB":17408,
"allocatedMB":0,
"containersAllocated":0,
"containersReserved":0,
"containersPending":0,
"totalMB":17408,
"totalNodes":1,
"lostNodes":0,
"unhealthyNodes":0,
"decommissionedNodes":0,
"rebootedNodes":0,
"activeNodes":1
}
}XML response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/metrics Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 432 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <clusterMetrics> <appsSubmitted>0</appsSubmitted> <appsCompleted>0</appsCompleted> <appsPending>0</appsPending> <appsRunning>0</appsRunning> <appsFailed>0</appsFailed> <appsKilled>0</appsKilled> <reservedMB>0</reservedMB> <availableMB>17408</availableMB> <allocatedMB>0</allocatedMB> <containersAllocated>0</containersAllocated> <containersReserved>0</containersReserved> <containersPending>0</containersPending> <totalMB>17408</totalMB> <totalNodes>1</totalNodes> <lostNodes>0</lostNodes> <unhealthyNodes>0</unhealthyNodes> <decommissionedNodes>0</decommissionedNodes> <rebootedNodes>0</rebootedNodes> <activeNodes>1</activeNodes> </clusterMetrics>
A scheduler resource contains information about the current scheduler configured in a cluster. It currently supports both the Fifo and Capacity Scheduler. You will get different information depending on which scheduler is configured so be sure to look at the type information.
The capacity scheduler supports hierarchical queues. This one request will print information about all the queues and any subqueues they have. Queues that can actually have jobs submitted to them are referred to as leaf queues. These queues have additional data associated with them.
| Item | Data Type | Description |
|---|---|---|
| type | string | Scheduler type - capacityScheduler |
| capacity | float | Configured queue capacity in percentage relative to its parent queue |
| usedCapacity | float | Used queue capacity in percentage |
| maxCapacity | float | Configured maximum queue capacity in percentage relative to its parent queue |
| queueName | string | Name of the queue |
| queues | array of queues(JSON)/zero or more queue objects(XML) | A collection of queue resources |
| Item | Data Type | Description |
|---|---|---|
| capacity | float | Configured queue capacity in percentage relative to its parent queue |
| usedCapacity | float | Used queue capacity in percentage |
| maxCapacity | float | Configured maximum queue capacity in percentage relative to its parent queue |
| absoluteCapacity | float | Absolute capacity percentage this queue can use of entire cluster |
| absoluteMaxCapacity | float | Absolute maximum capacity percentage this queue can use of the entire cluster |
| absoluteUsedCapacity | float | Absolute used capacity percentage this queue is using of the entire cluster |
| numApplications | int | The number of applications currently in the queue |
| usedResources | string | A string describing the current resources used by the queue |
| queueName | string | The name of the queue |
| state | string of QueueState | The state of the queue |
| queues | array of queues(JSON)/zero or more queue objects(XML) | A collection of sub-queue information |
| resourcesUsed | A single resource object | The total amount of resources used by this queue |
| Item | Data Type | Description |
|---|---|---|
| type | String | type of the queue - capacitySchedulerLeafQueueInfo |
| numActiveApplications | int | The number of active applications in this queue |
| numPendingApplications | int | The number of pending applications in this queue |
| numContainers | int | The number of containers being used |
| maxApplications | int | The maximum number of applications this queue can have |
| maxApplicationsPerUser | int | The maximum number of applications per user this queue can have |
| maxActiveApplications | int | The maximum number of active applications this queue can have |
| maxActiveApplicationsPerUser | int | The maximum number of active applications per user this queue can have |
| userLimit | int | The minimum user limit percent set in the configuration |
| userLimitFactor | float | The user limit factor set in the configuration |
| users | array of users(JSON)/zero or more user objects(XML) | A collection of user objects containing resources used |
| Item | Data Type | Description |
|---|---|---|
| username | String | The username of the user using the resources |
| resourcesUsed | A single resource object | The amount of resources used by the user in this queue |
| numActiveApplications | int | The number of active applications for this user in this queue |
| numPendingApplications | int | The number of pending applications for this user in this queue |
| Item | Data Type | Description |
|---|---|---|
| memory | int | The amount of memory used (in MB) |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/scheduler
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"scheduler": {
"schedulerInfo": {
"capacity": 100.0,
"maxCapacity": 100.0,
"queueName": "root",
"queues": {
"queue": [
{
"absoluteCapacity": 10.5,
"absoluteMaxCapacity": 50.0,
"absoluteUsedCapacity": 0.0,
"capacity": 10.5,
"maxCapacity": 50.0,
"numApplications": 0,
"queueName": "a",
"queues": {
"queue": [
{
"absoluteCapacity": 3.15,
"absoluteMaxCapacity": 25.0,
"absoluteUsedCapacity": 0.0,
"capacity": 30.000002,
"maxCapacity": 50.0,
"numApplications": 0,
"queueName": "a1",
"queues": {
"queue": [
{
"absoluteCapacity": 2.6775,
"absoluteMaxCapacity": 25.0,
"absoluteUsedCapacity": 0.0,
"capacity": 85.0,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 1,
"maxApplications": 267,
"maxApplicationsPerUser": 267,
"maxCapacity": 100.0,
"numActiveApplications": 0,
"numApplications": 0,
"numContainers": 0,
"numPendingApplications": 0,
"queueName": "a1a",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 1.0,
"users": null
},
{
"absoluteCapacity": 0.47250003,
"absoluteMaxCapacity": 25.0,
"absoluteUsedCapacity": 0.0,
"capacity": 15.000001,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 1,
"maxApplications": 47,
"maxApplicationsPerUser": 47,
"maxCapacity": 100.0,
"numActiveApplications": 0,
"numApplications": 0,
"numContainers": 0,
"numPendingApplications": 0,
"queueName": "a1b",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 1.0,
"users": null
}
]
},
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"usedCapacity": 0.0,
"usedResources": "memory: 0"
},
{
"absoluteCapacity": 7.35,
"absoluteMaxCapacity": 50.0,
"absoluteUsedCapacity": 0.0,
"capacity": 70.0,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 100,
"maxApplications": 735,
"maxApplicationsPerUser": 73500,
"maxCapacity": 100.0,
"numActiveApplications": 0,
"numApplications": 0,
"numContainers": 0,
"numPendingApplications": 0,
"queueName": "a2",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 100.0,
"users": null
}
]
},
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"usedCapacity": 0.0,
"usedResources": "memory: 0"
},
{
"absoluteCapacity": 89.5,
"absoluteMaxCapacity": 100.0,
"absoluteUsedCapacity": 0.0,
"capacity": 89.5,
"maxCapacity": 100.0,
"numApplications": 2,
"queueName": "b",
"queues": {
"queue": [
{
"absoluteCapacity": 53.7,
"absoluteMaxCapacity": 100.0,
"absoluteUsedCapacity": 0.0,
"capacity": 60.000004,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 100,
"maxApplications": 5370,
"maxApplicationsPerUser": 537000,
"maxCapacity": 100.0,
"numActiveApplications": 1,
"numApplications": 2,
"numContainers": 0,
"numPendingApplications": 1,
"queueName": "b1",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 100.0,
"users": {
"user": [
{
"numActiveApplications": 0,
"numPendingApplications": 1,
"resourcesUsed": {
"memory": 0
},
"username": "user2"
},
{
"numActiveApplications": 1,
"numPendingApplications": 0,
"resourcesUsed": {
"memory": 0
},
"username": "user1"
}
]
}
},
{
"absoluteCapacity": 35.3525,
"absoluteMaxCapacity": 100.0,
"absoluteUsedCapacity": 0.0,
"capacity": 39.5,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 100,
"maxApplications": 3535,
"maxApplicationsPerUser": 353500,
"maxCapacity": 100.0,
"numActiveApplications": 0,
"numApplications": 0,
"numContainers": 0,
"numPendingApplications": 0,
"queueName": "b2",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 100.0,
"users": null
},
{
"absoluteCapacity": 0.4475,
"absoluteMaxCapacity": 100.0,
"absoluteUsedCapacity": 0.0,
"capacity": 0.5,
"maxActiveApplications": 1,
"maxActiveApplicationsPerUser": 100,
"maxApplications": 44,
"maxApplicationsPerUser": 4400,
"maxCapacity": 100.0,
"numActiveApplications": 0,
"numApplications": 0,
"numContainers": 0,
"numPendingApplications": 0,
"queueName": "b3",
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"type": "capacitySchedulerLeafQueueInfo",
"usedCapacity": 0.0,
"usedResources": "memory: 0",
"userLimit": 100,
"userLimitFactor": 100.0,
"users": null
}
]
},
"resourcesUsed": {
"memory": 0
},
"state": "RUNNING",
"usedCapacity": 0.0,
"usedResources": "memory: 0"
}
]
},
"type": "capacityScheduler",
"usedCapacity": 0.0
}
}
}XML response
HTTP Request:
Accept: application/xml GET http://<rm http address:port>/ws/v1/cluster/scheduler
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 5778 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<scheduler>
<schedulerInfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="capacityScheduler">
<capacity>100.0</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<queueName>root</queueName>
<queues>
<queue>
<capacity>10.5</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>50.0</maxCapacity>
<absoluteCapacity>10.5</absoluteCapacity>
<absoluteMaxCapacity>50.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>a</queueName>
<state>RUNNING</state>
<queues>
<queue>
<capacity>30.000002</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>50.0</maxCapacity>
<absoluteCapacity>3.15</absoluteCapacity>
<absoluteMaxCapacity>25.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>a1</queueName>
<state>RUNNING</state>
<queues>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>85.0</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>2.6775</absoluteCapacity>
<absoluteMaxCapacity>25.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>a1a</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>0</numActiveApplications>
<numPendingApplications>0</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>267</maxApplications>
<maxApplicationsPerUser>267</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>1</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users/>
<userLimitFactor>1.0</userLimitFactor>
</queue>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>15.000001</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>0.47250003</absoluteCapacity>
<absoluteMaxCapacity>25.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>a1b</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>0</numActiveApplications>
<numPendingApplications>0</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>47</maxApplications>
<maxApplicationsPerUser>47</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>1</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users/>
<userLimitFactor>1.0</userLimitFactor>
</queue>
</queues>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
</queue>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>70.0</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>7.35</absoluteCapacity>
<absoluteMaxCapacity>50.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>a2</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>0</numActiveApplications>
<numPendingApplications>0</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>735</maxApplications>
<maxApplicationsPerUser>73500</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>100</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users/>
<userLimitFactor>100.0</userLimitFactor>
</queue>
</queues>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
</queue>
<queue>
<capacity>89.5</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>89.5</absoluteCapacity>
<absoluteMaxCapacity>100.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>2</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>b</queueName>
<state>RUNNING</state>
<queues>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>60.000004</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>53.7</absoluteCapacity>
<absoluteMaxCapacity>100.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>2</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>b1</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>1</numActiveApplications>
<numPendingApplications>1</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>5370</maxApplications>
<maxApplicationsPerUser>537000</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>100</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users>
<user>
<username>user2</username>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numPendingApplications>1</numPendingApplications>
<numActiveApplications>0</numActiveApplications>
</user>
<user>
<username>user1</username>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numPendingApplications>0</numPendingApplications>
<numActiveApplications>1</numActiveApplications>
</user>
</users>
<userLimitFactor>100.0</userLimitFactor>
</queue>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>39.5</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>35.3525</absoluteCapacity>
<absoluteMaxCapacity>100.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>b2</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>0</numActiveApplications>
<numPendingApplications>0</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>3535</maxApplications>
<maxApplicationsPerUser>353500</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>100</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users/>
<userLimitFactor>100.0</userLimitFactor>
</queue>
<queue xsi:type="capacitySchedulerLeafQueueInfo">
<capacity>0.5</capacity>
<usedCapacity>0.0</usedCapacity>
<maxCapacity>100.0</maxCapacity>
<absoluteCapacity>0.4475</absoluteCapacity>
<absoluteMaxCapacity>100.0</absoluteMaxCapacity>
<absoluteUsedCapacity>0.0</absoluteUsedCapacity>
<numApplications>0</numApplications>
<usedResources>memory: 0</usedResources>
<queueName>b3</queueName>
<state>RUNNING</state>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
<numActiveApplications>0</numActiveApplications>
<numPendingApplications>0</numPendingApplications>
<numContainers>0</numContainers>
<maxApplications>44</maxApplications>
<maxApplicationsPerUser>4400</maxApplicationsPerUser>
<maxActiveApplications>1</maxActiveApplications>
<maxActiveApplicationsPerUser>100</maxActiveApplicationsPerUser>
<userLimit>100</userLimit>
<users/>
<userLimitFactor>100.0</userLimitFactor>
</queue>
</queues>
<resourcesUsed>
<memory>0</memory>
</resourcesUsed>
</queue>
</queues>
</schedulerInfo>
</scheduler>| Item | Data Type | Description |
|---|---|---|
| type | string | Scheduler type - fifoScheduler |
| capacity | float | Queue capacity in percentage |
| usedCapacity | float | Used queue capacity in percentage |
| qstate | string | State of the queue - valid values are: STOPPED, RUNNING |
| minQueueMemoryCapacity | int | Minimum queue memory capacity |
| maxQueueMemoryCapacity | int | Maximum queue memory capacity |
| numNodes | int | The total number of nodes |
| usedNodeCapacity | int | The used node capacity |
| availNodeCapacity | int | The available node capacity |
| totalNodeCapacity | int | The total node capacity |
| numContainers | int | The number of containers |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/scheduler
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"scheduler":
{
"schedulerInfo":
{
"type":"fifoScheduler",
"capacity":1,
"usedCapacity":"NaN",
"qstate":"RUNNING",
"minQueueMemoryCapacity":1024,
"maxQueueMemoryCapacity":10240,
"numNodes":0,
"usedNodeCapacity":0,
"availNodeCapacity":0,
"totalNodeCapacity":0,
"numContainers":0
}
}
}JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/scheduler Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 432 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<scheduler>
<schedulerInfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="fifoScheduler">
<capacity>1.0</capacity>
<usedCapacity>NaN</usedCapacity>
<qstate>RUNNING</qstate>
<minQueueMemoryCapacity>1024</minQueueMemoryCapacity>
<maxQueueMemoryCapacity>10240</maxQueueMemoryCapacity>
<numNodes>0</numNodes>
<usedNodeCapacity>0</usedNodeCapacity>
<availNodeCapacity>0</availNodeCapacity>
<totalNodeCapacity>0</totalNodeCapacity>
<numContainers>0</numContainers>
</schedulerInfo>
</scheduler>With the Applications API, you can obtain a collection of resources, each of which represents an application. When you run a GET operation on this resource, you obtain a collection of Application Objects.
Multiple paramters can be specified. The started and finished times have a begin and end parameter to allow you to specify ranges. For example, one could request all applications that started between 1:00am and 2:00pm on 12/19/2011 with startedTimeBegin=1324256400&startedTimeEnd=1324303200. If the Begin parameter is not specfied, it defaults to 0, and if the End parameter is not specified, it defaults to infinity.
* state - state of the application * finalStatus - the final status of the application - reported by the application itself * user - user name * queue - queue name * limit - total number of app objects to be returned * startedTimeBegin - applications with start time beginning with this time, specified in ms since epoch * startedTimeEnd - applications with start time ending with this time, specified in ms since epoch * finishedTimeBegin - applications with finish time beginning with this time, specified in ms since epoch * finishedTimeEnd - applications with finish time ending with this time, specified in ms since epoch
When you make a request for the list of applications, the information will be returned as a collection of app objects. See also Application API for syntax of the app object.
| Item | Data Type | Description |
|---|---|---|
| app | array of app objects(JSON)/zero or more application objects(XML) | The collection of application objects |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"apps":
{
"app":
[
{
"finishedTime" : 1326815598530,
"amContainerLogs" : "http://host.domain.com:8042/node/containerlogs/container_1326815542473_0001_01_000001",
"trackingUI" : "History",
"state" : "FINISHED",
"user" : "user1",
"id" : "application_1326815542473_0001",
"clusterId" : 1326815542473,
"finalStatus" : "SUCCEEDED",
"amHostHttpAddress" : "host.domain.com:8042",
"progress" : 100,
"name" : "word count",
"startedTime" : 1326815573334,
"elapsedTime" : 25196,
"diagnostics" : "",
"trackingUrl" : "http://host.domain.com:8088/proxy/application_1326815542473_0001/jobhistory/job/job_1326815542473_1_1",
"queue" : "default"
},
{
"finishedTime" : 1326815789546,
"amContainerLogs" : "http://host.domain.com:8042/node/containerlogs/container_1326815542473_0002_01_000001",
"trackingUI" : "History",
"state" : "FINISHED",
"user" : "user1",
"id" : "application_1326815542473_0002",
"clusterId" : 1326815542473,
"finalStatus" : "SUCCEEDED",
"amHostHttpAddress" : "host.domain.com:8042",
"progress" : 100,
"name" : "Sleep job",
"startedTime" : 1326815641380,
"elapsedTime" : 148166,
"diagnostics" : "",
"trackingUrl" : "http://host.domain.com:8088/proxy/application_1326815542473_0002/jobhistory/job/job_1326815542473_2_2",
"queue" : "default"
}
]
}
}JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 2459 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<apps>
<app>
<id>application_1326815542473_0001</id>
<user>user1</user>
<name>word count</name>
<queue>default</queue>
<state>FINISHED</state>
<finalStatus>SUCCEEDED</finalStatus>
<progress>100.0</progress>
<trackingUI>History</trackingUI>
<trackingUrl>http://host.domain.com:8088/proxy/application_1326815542473_0001/jobhistory/job
/job_1326815542473_1_1</trackingUrl>
<diagnostics/>
<clusterId>1326815542473</clusterId>
<startedTime>1326815573334</startedTime>
<finishedTime>1326815598530</finishedTime>
<elapsedTime>25196</elapsedTime>
<amContainerLogs>http://host.domain.com:8042/node/containerlogs/container_1326815542473_0001
_01_000001</amContainerLogs>
<amHostHttpAddress>host.domain.com:8042</amHostHttpAddress>
</app>
<app>
<id>application_1326815542473_0002</id>
<user>user1</user>
<name>Sleep job</name>
<queue>default</queue>
<state>FINISHED</state>
<finalStatus>SUCCEEDED</finalStatus>
<progress>100.0</progress>
<trackingUI>History</trackingUI>
<trackingUrl>http://host.domain.com:8088/proxy/application_1326815542473_0002/jobhistory/job/job_1326815542473_2_2</trackingUrl>
<diagnostics/>
<clusterId>1326815542473</clusterId>
<startedTime>1326815641380</startedTime>
<finishedTime>1326815789546</finishedTime>
<elapsedTime>148166</elapsedTime>
<amContainerLogs>http://host.domain.com:8042/node/containerlogs/container_1326815542473_0002_01_000001</amContainerLogs>
<amHostHttpAddress>host.domain.com:8042</amHostHttpAddress>
</app>
</apps>
An application resource contains information about a particular application that was submitted to a cluster.
Use the following URI to obtain an app object, from a application identified by the appid value.
* http://<rm http address:port>/ws/v1/cluster/apps/{appid}Note that depending on security settings a user might not be able to see all the fields.
| Item | Data Type | Description |
|---|---|---|
| id | string | The application id |
| user | string | The user who started the application |
| name | string | The application name |
| queue | string | The queue the application was submitted to |
| state | string | The application state according to the ResourceManager - valid values are: NEW, SUBMITTED, ACCEPTED, RUNNING, FINISHED, FAILED, KILLED |
| finalStatus | string | The final status of the application if finished - reported by the application itself - valid values are: UNDEFINED, SUCCEEDED, FAILED, KILLED |
| progress | float | The progress of the application as a percent |
| trackingUI | string | Where the tracking url is currently pointing - History (for history server) or ApplicationMaster |
| trackingUrl | string | The web URL that can be used to track the application |
| diagnostics | string | Detailed diagnostics information |
| clusterId | long | The cluster id |
| startedTime | long | The time in which application started (in ms since epoch) |
| finishedTime | long | The time in which the application finished (in ms since epoch) |
| elapsedTime | long | The elapsed time since the application started (in ms) |
| amContainerLogs | string | The URL of the application master container logs |
| amHostHttpAddress | string | The nodes http address of the application master |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps/application_1326821518301_0005
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"app" : {
"finishedTime" : 1326824991300,
"amContainerLogs" : "http://host.domain.com:8042/node/containerlogs/container_1326821518301_0005_01_000001",
"trackingUI" : "History",
"state" : "FINISHED",
"user" : "user1",
"id" : "application_1326821518301_0005",
"clusterId" : 1326821518301,
"finalStatus" : "SUCCEEDED",
"amHostHttpAddress" : "host.domain.com:8042",
"progress" : 100,
"name" : "Sleep job",
"startedTime" : 1326824544552,
"elapsedTime" : 446748,
"diagnostics" : "",
"trackingUrl" : "http://host.domain.com:8088/proxy/application_1326821518301_0005/jobhistory/job/job_1326821518301_5_5",
"queue" : "a1"
}
}JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps/application_1326821518301_0005 Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 847 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <app> <id>application_1326821518301_0005</id> <user>user1</user> <name>Sleep job</name> <queue>a1</queue> <state>FINISHED</state> <finalStatus>SUCCEEDED</finalStatus> <progress>100.0</progress> <trackingUI>History</trackingUI> <trackingUrl>http://host.domain.com:8088/proxy/application_1326821518301_0005/jobhistory/job/job_1326821518301_5_5</trackingUrl> <diagnostics/> <clusterId>1326821518301</clusterId> <startedTime>1326824544552</startedTime> <finishedTime>1326824991300</finishedTime> <elapsedTime>446748</elapsedTime> <amContainerLogs>http://host.domain.com:8042/node/containerlogs/container_1326821518301_0005_01_000001</amContainerLogs> <amHostHttpAddress>host.domain.com:8042</amHostHttpAddress> </app>
With the application attempts API, you can obtain a collection of resources that represent an application attempt. When you run a GET operation on this resource, you obtain a collection of App Attempt Objects.
When you make a request for the list of app attempts, the information will be returned as an array of app attempt objects.
appAttempts:
| Item | Data Type | Description |
|---|---|---|
| appAttempt | array of app attempt objects(JSON)/zero or more app attempt objects(XML) | The collection of app attempt objects |
| Item | Data Type | Description |
|---|---|---|
| id | string | The app attempt id |
| nodeId | string | The node id of the node the attempt ran on |
| nodeHttpAddress | string | The node http address of the node the attempt ran on |
| logsLink | string | The http link to the app attempt logs |
| containerId | string | The id of the container for the app attempt |
| startTime | long | The start time of the attempt (in ms since epoch) |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps/application_1326821518301_0005/appattempts
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"appAttempts" : {
"appAttempt" : [
{
"nodeId" : "host.domain.com:8041",
"nodeHttpAddress" : "host.domain.com:8042",
"startTime" : 1326381444693,
"id" : 1,
"logsLink" : "http://host.domain.com:8042/node/containerlogs/container_1326821518301_0005_01_000001/user1",
"containerId" : "container_1326821518301_0005_01_000001"
}
]
}
}XML response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/apps/application_1326821518301_0005/appattempts Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 575 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<appAttempts>
<appttempt>
<nodeHttpAddress>host.domain.com:8042</nodeHttpAddress>
<nodeId>host.domain.com:8041</nodeId>
<id>1</id>
<startTime>1326381444693</startTime>
<containerId>container_1326821518301_0005_01_000001</containerId>
<logsLink>http://host.domain.com:8042/node/containerlogs/container_1326821518301_0005_01_000001/user1</logsLink>
</appAttempt>
</appAttempts>With the Nodes API, you can obtain a collection of resources, each of which represents a node. When you run a GET operation on this resource, you obtain a collection of Node Objects.
When you make a request for the list of nodes, the information will be returned as a collection of node objects. See also Node API for syntax of the node object.
| Item | Data Type | Description |
|---|---|---|
| node | array of node objects(JSON)/zero or more node objects(XML) | A collection of node objects |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/nodes
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"nodes":
{
"node":
[
{
"rack":"\/default-rack",
"state":"NEW",
"id":"h2:1235",
"nodeHostName":"h2",
"nodeHTTPAddress":"h2:2",
"healthStatus":"Healthy",
"lastHealthUpdate":1324056895432,
"healthReport":"Healthy",
"numContainers":0,
"usedMemoryMB":0
"availMemoryMB":8192
},
{
"rack":"\/default-rack",
"state":"NEW",
"id":"h1:1234",
"nodeHostName":"h1",
"nodeHTTPAddress":"h1:2",
"healthStatus":"Healthy",
"lastHealthUpdate":1324056895092,
"healthReport":"Healthy",
"numContainers":0,
"usedMemoryMB":0,
"availMemoryMB":8192
}
]
}
}JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/nodes Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 1104 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<nodes>
<node>
<rack>/default-rack</rack>
<state>RUNNING</state>
<id>h2:1234</id>
<nodeHostName>h2</nodeHostName>
<nodeHTTPAddress>h2:2</nodeHTTPAddress>
<healthStatus>Healthy</healthStatus>
<lastHealthUpdate>1324333268447</lastHealthUpdate>
<healthReport>Healthy</healthReport>
<numContainers>0</numContainers>
<usedMemoryMB>0</usedMemoryMB>
<availMemoryMB>5120</availMemoryMB>
</node>
<node>
<rack>/default-rack</rack>
<state>RUNNING</state>
<id>h1:1234</id>
<nodeHostName>h1</nodeHostName>
<nodeHTTPAddress>h1:2</nodeHTTPAddress>
<healthStatus>Healthy</healthStatus>
<lastHealthUpdate>1324333268447</lastHealthUpdate>
<healthReport>Healthy</healthReport>
<numContainers>0</numContainers>
<usedMemoryMB>0</usedMemoryMB>
<availMemoryMB>5120</availMemoryMB>
</node>
</nodes>A node resource contains information about a node in the cluster.
Use the following URI to obtain a Node Object, from a node identified by the nodeid value.
* http://<rm http address:port>/ws/v1/cluster/nodes/{nodeid}| Item | Data Type | Description |
|---|---|---|
| rack | string | The rack location of this node |
| state | string | State of the node - valid values are: NEW, RUNNING, UNHEALTHY, DECOMMISSIONED, LOST, REBOOTED |
| id | string | The node id |
| nodeHostName | string | The host name of the node |
| nodeHTTPAddress | string | The nodes HTTP address |
| healthStatus | string | The health status of the node - Healthy or Unhealthy |
| healthReport | string | A detailed health report |
| lastHealthUpdate | long | The last time the node reported its health (in ms since epoch) |
| usedMemoryMB | long | The total about of memory currently used on the node (in MB) |
| availMemoryMB | long | The total amount of memory currently available on the node (in MB) |
| numContainers | int | The total number of containers currently running on the node |
JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/nodes/h2:1235
Response Header:
HTTP/1.1 200 OK Content-Type: application/json Transfer-Encoding: chunked Server: Jetty(6.1.26)
Response Body:
{
"node":
{
"rack":"\/default-rack",
"state":"NEW",
"id":"h2:1235",
"nodeHostName":"h2",
"nodeHTTPAddress":"h2:2",
"healthStatus":"Healthy",
"lastHealthUpdate":1324056895432,
"healthReport":"Healthy",
"numContainers":0,
"usedMemoryMB":0,
"availMemoryMB":5120
}
}JSON response
HTTP Request:
GET http://<rm http address:port>/ws/v1/cluster/node/h2:1235 Accept: application/xml
Response Header:
HTTP/1.1 200 OK Content-Type: application/xml Content-Length: 552 Server: Jetty(6.1.26)
Response Body:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <node> <rack>/default-rack</rack> <state>NEW</state> <id>h2:1235</id> <nodeHostName>h2</nodeHostName> <nodeHTTPAddress>h2:2</nodeHTTPAddress> <healthStatus>Healthy</healthStatus> <lastHealthUpdate>1324333268447</lastHealthUpdate> <healthReport>Healthy</healthReport> <numContainers>0</numContainers> <usedMemoryMB>0</usedMemoryMB> <availMemoryMB>5120</availMemoryMB> </node>