Yarn作为一款优秀的开源集群管理工具，可以用它来运行Hadoop，Spark，Flink等大数据处理任务。所有的分布式计算框架，都是主从模式，ResourceManager作为集群的管理员，是任务提交的入口。一般企业的大数据处理平台会在Yarn的基础中做进一步的封装，以web应用的形式提供更高级的大数据处理平台。如果web应用通过shell的方式提交任务将显得太重，而且不利于任务状态的监控。幸好Yarn提供了ResourceManager的REST API，可以很方便的向集群提交、杀死任务或者监控任务的状态，本文将简要介绍ResourceManager REST API的使用方法。
向集群提交任务
先通过POST请求生成application_id再通过这个id来提交任务。
生成application-id
通过POST请求rm-http-address:port/ws/v1/cluster/apps/new-application，不需要参数，ResourceManager将返回application_id与集群可用资源配额，如下：
请求url
http://cdh-1:8088/ws/v1/cluster/apps/new-application请求参数：无
返回数据
{
"application-id": "application_1613349389113_0535",
"maximum-resource-capability": {
"memory": 16384,
"vCores": 8,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 16384
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 8
}
]
}
}
}返回json字段说明
| Item | Data Type | Description |
|---|---|---|
| application-id | string | The newly created application id |
| maximum-resource-capability | object | The maximum resource capabilities available on this cluster |
maximum-resource-capability元素说明
| Item | Data Type | Description |
|---|---|---|
| memory | int | 容器可用的最大内存 |
| vCores | int | 容器可用的最大核心数 |
提交任务
提交应用程序API可用于提交应用程序。如果提交申请，则必须首先使用Cluster New Application API获得一个应用程序ID 。应用程序ID必须是请求正文的一部分。响应包含指向应用程序页面的URL，可用于跟踪应用程序的状态和进度。
通过POST请求rm-http-address:port/ws/v1/cluster/apps提交任务
请求url
http://cdh-1:8088/ws/v1/cluster/apps请求参数
POST http://<rm http address:port>/ws/v1/cluster/apps
Accept: application/json
Content-Type: application/json
{
"application-id":"application_1404203615263_0001",
"application-name":"test",
"am-container-spec":
{
"local-resources":
{
"entry":
[
{
"key":"AppMaster.jar",
"value":
{
"resource":"hdfs://hdfs-namenode:9000/user/testuser/DistributedShell/demo-app/AppMaster.jar",
"type":"FILE",
"visibility":"APPLICATION",
"size": 43004,
"timestamp": 1405452071209
}
}
]
},
"commands":
{
"command":"{{JAVA_HOME}}/bin/java -Xmx10m org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster --container_memory 10 --container_vcores 1 --num_containers 1 --priority 0 1><LOG_DIR>/AppMaster.stdout 2><LOG_DIR>/AppMaster.stderr"
},
"environment":
{
"entry":
[
{
"key": "DISTRIBUTEDSHELLSCRIPTTIMESTAMP",
"value": "1405459400754"
},
{
"key": "CLASSPATH",
"value": "{{CLASSPATH}}<CPS>./*<CPS>{{HADOOP_CONF_DIR}}<CPS>{{HADOOP_COMMON_HOME}}/share/hadoop/common/*<CPS>{{HADOOP_COMMON_HOME}}/share/hadoop/common/lib/*<CPS>{{HADOOP_HDFS_HOME}}/share/hadoop/hdfs/*<CPS>{{HADOOP_HDFS_HOME}}/share/hadoop/hdfs/lib/*<CPS>{{HADOOP_YARN_HOME}}/share/hadoop/yarn/*<CPS>{{HADOOP_YARN_HOME}}/share/hadoop/yarn/lib/*<CPS>./log4j.properties"
},
{
"key": "DISTRIBUTEDSHELLSCRIPTLEN",
"value": "6"
},
{
"key": "DISTRIBUTEDSHELLSCRIPTLOCATION",
"value": "hdfs://hdfs-namenode:9000/user/testuser/demo-app/shellCommands"
}
]
}
},
"unmanaged-AM":false,
"max-app-attempts":2,
"resource":
{
"memory":1024,
"vCores":1
},
"application-type":"YARN",
"keep-containers-across-application-attempts":false
}请求参数说明
| Item | Data Type | Description |
|---|---|---|
| application-id | string | 申请编号 |
| application-name | string | 申请名称 |
| queue | string | 应将应用程序提交到的队列的名称 |
| priority | int | 应用程序的优先级 |
| am-container-spec | object | 应用程序主容器启动上下文，如下所述 |
| unmanaged-AM | boolean | 该应用程序是否使用非托管应用程序主机 |
| max-app-attempts | int | 此应用程序的最大尝试次数 |
| resource | object | 应用程序主机需要的资源，如下所述 |
| application-type | string | 应用程序类型（MapReduce，Pig，Hive等） |
| keep-containers-across-application-attmpts | boolean | YARN是否应保留此应用程序使用的容器而不是销毁它们 |
| application-tags | object | 应用程序标签列表，请参阅有关如何指定标签的请求示例 |
am-container-spec对象的元素
应该使用am-container-spec对象为应用程序主机提供容器启动上下文。
| Item | Data Type | Description |
|---|---|---|
| local-resources | object | 描述需要本地化的资源的对象，如下所述 |
| environment | object | 容器的环境变量，指定为键值对 |
| commands | object | 用于启动容器的命令（应按执行顺序） |
| service-data | object | 特定于应用程序的服务数据；key是辅助服务的名称，值是您希望传递的数据的base-64编码 |
| credentials | object | 您的应用程序运行所需的凭据，如下所述 |
| application-acls | object | 您的应用程序的ACLs；密钥可以是“ VIEW_APP”或“ MODIFY_APP”，值是具有权限的用户列表 |
local-resource对象的元素
| Item | Data Type | Description |
|---|---|---|
| resource | string | 要本地化的资源的位置 |
| type | string | 资源类型；选项是“ ARCHIVE”，“ FILE”和“ PATTERN” |
| visibility | string | 可见要本地化的资源；选项是“ PUBLIC”，“ PRIVATE”和“ APPLICATION” |
| size | long | 要本地化的资源大小 |
| timestamp | long | 要本地化的资源的时间戳 |
credentials对象的元素
| Item | Data Type | Description |
|---|---|---|
| tokens | object | 您希望传递给应用程序的令牌，指定为键值对。密钥是令牌的标识符，值是令牌（应使用相应的Web服务获取） |
| secrets | object | 您希望在应用程序中使用的机密，指定为键值对。它们的键是标识符，值是密钥的base-64编码 |
resource对象的元素
| Item | Data Type | Description |
|---|---|---|
| memory | int | 每个容器所需的内存 |
| vCores | int | 每个容器所需的虚拟核心 |
返回数据： 无
提交后ResourceManager不会返回信息。从请求的参数可以看出，如果想通过Yarn来管理某个分布式计算任务，必须有对应的ApplicationMaser实现，如上例中的AppMaster.jar，其执行入口类为org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster。常见的分布式计算任务如Hadoop、Spark与Flink都有，但Flink-yarn项目对Flink 1.9貌似还 没有实现对应的ApplicationMaster，所以Flink 1.9的任务目前还不能通过Rest API提交（1.7可以）。
查询任务状态信息
查询所有任务
通过GET请求rm-http-address:port/ws/v1/cluster/apps将获取到所有任务的信息列表，如
请求url
http://cdh-:8088/ws/v1/cluster/apps请求参数（可选）
可以为GET操作指定多个参数。开始时间和结束时间都有一个begin和end参数，以允许您指定范围。例如，可以请求在2021年3月2日早上09:00:00和早上10:00：00之间启动的所有应用程序，其中startedTimeBegin = 1614646800000＆startedTimeEnd = 1614650400000。如果未指定Begin参数，则默认为0；如果未指定End参数，则默认为无穷大。
* state [deprecated] - state of the application
* states - applications matching the given application states, specified as a comma-separated list.[NEW, NEW_SAVING, SUBMITTED, ACCEPTED, RUNNING, FINISHED, FAILED, KILLED]
* finalStatus - the final status of the application - reported by the application itself [UNDEFINED, FAILED, KILLED, SUCCEEDED]
* 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
* applicationTypes - applications matching the given application types, specified as a comma-separated list.
* applicationTags - applications matching any of the given application tags, specified as a comma-separated list.返回数据
{
"apps": {
"app": [
{
"id": "application_1613349389113_0393",
"user": "root",
"name": "com.zzmj.main.KafkaToParquet",
"queue": "root.users.root",
"state": "RUNNING",
"finalStatus": "UNDEFINED",
"progress": 10.0,
"trackingUI": "ApplicationMaster",
"trackingUrl": "http://cdh-1:8088/proxy/application_1613349389113_0393/",
"diagnostics": "",
"clusterId": 1613349389113,
"applicationType": "SPARK",
"applicationTags": "",
"priority": 0,
"startedTime": 1614648944707,
"launchTime": 1614648945179,
"finishedTime": 0,
"elapsedTime": 515573848,
"amContainerLogs": "http://cdh-4:8042/node/containerlogs/container_1613349389113_0393_01_000001/root",
"amHostHttpAddress": "cdh-4:8042",
"amRPCAddress": "cdh-4:46434",
"allocatedMB": 5120,
"allocatedVCores": 4,
"reservedMB": 0,
"reservedVCores": 0,
"runningContainers": 2,
"memorySeconds": 2514229328,
"vcoreSeconds": 1914825,
"queueUsagePercentage": 6.25,
"clusterUsagePercentage": 6.25,
"resourceSecondsMap": {
"entry": {
"key": "memory-mb",
"value": "2514229328"
},
"entry": {
"key": "vcores",
"value": "1914825"
}
},
"preemptedResourceMB": 0,
"preemptedResourceVCores": 0,
"numNonAMContainerPreempted": 0,
"numAMContainerPreempted": 0,
"preemptedMemorySeconds": 0,
"preemptedVcoreSeconds": 0,
"preemptedResourceSecondsMap": {},
"logAggregationStatus": "NOT_START",
"unmanagedApplication": false,
"amNodeLabelExpression": "",
"timeouts": {
"timeout": [
{
"type": "LIFETIME",
"expiryTime": "UNLIMITED",
"remainingTimeInSeconds": -1
}
]
}
}
]
}
}字段说明
| Item | DataType | Description |
|---|---|---|
| id | string | 应用的application-id |
| user | string | 提交任务的用户名 |
| name | string | 应用程序的名称 |
| queue | string | 应用程序所属消息队列 |
| state | string | 应用程序当前状态 |
| finalStatus | string | 应用程序最终状态 |
| progress | double | 应用程序进度 |
| trackingUI | string | 追踪UI显示名称 |
| trackingUrl | string | 追踪UI的url |
| clusterId | string | 集群id |
| applicationType | string | 应用程序类型 |
| priority | int | 应用程序优先级 |
| startedTime | long | 应用程序开始时间 |
| launchTime | long | 应用程序加载时间 |
| finishedTime | long | 应用程序完成时间 |
| elapsedTime | long | 应用程序消耗时间(finished-start) |
| amContainerLogs | string | am容器日志地址 |
| amHostHttpAddress | string | am的主机http地址 |
| amRPCAddress | string | am的RPC地址 |
| allocatedMB | string | 初始化内存大小 |
| allocatedVCores | string | 初始化核心数 |
| reservedMB | string | 保留内存 |
| reservedVCores | string | 保留核心数 |
| runningContainers | string | 正在运行的容器数 |
| memorySeconds | int | 所有的container每秒消耗的内存总和 |
| vcoreSecond | string | 所有的container每秒消耗的核心数总和 |
| queueUsagePercentage | double | 所属队列的资源使用百分比 |
| clusterUsagePercentage | double | 所属集群的资源使用百分比 |
| logAggregationStatus | string | 日志聚合状态 |
| unmanagedApplication | boolean | 未被管理的应用程序 |
查询单个任务
通过GET请求rm-http-address:port/ws/v1/cluster/apps/{appid}，如
http://cdh-1:8088/ws/v1/cluster/apps/application_1613349389113_0001{
"app": {
"id": "application_1613349389113_0001",
"user": "root",
"name": "StorageAgg",
"queue": "root.users.root",
"state": "RUNNING",
"finalStatus": "UNDEFINED",
"progress": 100.0,
"trackingUI": "ApplicationMaster",
"trackingUrl": "http://cdh-1:8088/proxy/application_1613349389113_0001/",
"diagnostics": "",
"clusterId": 1613349389113,
"applicationType": "Apache Flink",
"applicationTags": "",
"priority": 0,
"startedTime": 1613358478865,
"launchTime": 1613358479810,
"finishedTime": 0,
"elapsedTime": 1829294258,
"amContainerLogs": "http://cdh-4:8042/node/containerlogs/container_1613349389113_0001_01_000001/root",
"amHostHttpAddress": "cdh-4:8042",
"amRPCAddress": "cdh-4:8082",
"allocatedMB": 9216,
"allocatedVCores": 4,
"reservedMB": 0,
"reservedVCores": 0,
"runningContainers": 2,
"memorySeconds": 16858454105,
"vcoreSeconds": 7317057,
"queueUsagePercentage": 11.25,
"clusterUsagePercentage": 11.25,
"resourceSecondsMap": {
"entry": {
"key": "memory-mb",
"value": "16858454105"
},
"entry": {
"key": "vcores",
"value": "7317057"
}
},
"preemptedResourceMB": 0,
"preemptedResourceVCores": 0,
"numNonAMContainerPreempted": 0,
"numAMContainerPreempted": 0,
"preemptedMemorySeconds": 0,
"preemptedVcoreSeconds": 0,
"preemptedResourceSecondsMap": {},
"logAggregationStatus": "NOT_START",
"unmanagedApplication": false,
"amNodeLabelExpression": "",
"timeouts": {
"timeout": [
{
"type": "LIFETIME",
"expiryTime": "UNLIMITED",
"remainingTimeInSeconds": -1
}
]
}
}
}修改任务状态
通过Cluster Application State API来完成，当然需要得到RM web service的授权才能进行这种操作，URI为rm-http-address:port/ws/v1/cluster/apps/{appid}/state，如
通过GET请求该URI
http://cdh-1:8088/ws/v1/cluster/apps/application_1613349389113_0001/state将返回的application_id为application_1613349389113_0001的任务的状态
{
"state": "RUNNING"
}然会参数列举说明
| Item | Data Type | Description |
|---|---|---|
| state | string | The application state - can be one of “NEW”, “NEW_SAVING”, “SUBMITTED”, “ACCEPTED”, “RUNNING”, “FINISHED”, “FAILED”, “KILLED” |
或者通过PUT请求来kill一个job
http://cdh-1:8088/ws/v1/cluster/apps/application_1399397633663_0003/state{
"state":"KILLED"
}返回结果为
{
"state":"RUNNING"
}其实的state的状态为当前程序的状态【RUNNING, ACCEPTED】
重新通过GET请求该任务的状态
发现该任务已经被kill了
{
"state":"KILLED"
}查看与调整任务优先级
主要通过访问rm-http-address:port/ws/v1/cluster/apps/{appid}/priority来完成。统一需要得到RM web services的授权
查看任务优先级
通过GET请求上面的URI，如
http://cdh-1:8088/ws/v1/cluster/apps/application_1613349389113_0001/priority将返回application_id为application_1613349389113_0001的任务的优先级
{
"priority": 0
}修改任务优先级
如果这项任务非常重要，你想让它优先执行，可通过PUT请求来修改其优先级
http://cdh-1:8088/ws/v1/cluster/apps/application_1613349389113_0001/priority
请求参数：
Accept: application/json
Content-Type: application/json
{
"priority": 8
}集群API
集群信息
主要通过GET请求访问rm-http-address:port/ws/v1/cluster来完成。
通过GET请求上面的URI，如
http://cdh-1:8088/ws/v1/cluster请求参数： 无
返回数据
{
"clusterInfo": {
"id": 1613349389113,
"startedOn": 1613349389113,
"state": "STARTED",
"haState": "ACTIVE",
"rmStateStoreName": "org.apache.hadoop.yarn.server.resourcemanager.recovery.NullRMStateStore",
"resourceManagerVersion": "3.0.0-cdh6.3.2",
"resourceManagerBuildVersion": "3.0.0-cdh6.3.2 from 9aff20de3b5ecccf3c19d57f71b214fb4d37ee89 by jenkins source checksum bdea11f98ce3d056d6c170c883b73569",
"resourceManagerVersionBuiltOn": "2019-11-08T13:55Z",
"hadoopVersion": "3.0.0-cdh6.3.2",
"hadoopBuildVersion": "3.0.0-cdh6.3.2 from 9aff20de3b5ecccf3c19d57f71b214fb4d37ee89 by jenkins source checksum f539c87da37534aad732f2a7ddcc59",
"hadoopVersionBuiltOn": "2019-11-08T13:49Z",
"haZooKeeperConnectionState": "Could not find leader elector. Verify both HA and automatic failover are enabled."
}
}返回数据字段说明
| Item | Data Type | Description |
|---|---|---|
| id | long | 集群ID |
| startedOn | long | 集群启动的时间（从纪元开始以毫秒为单位） |
| state | string | ResourceManager状态-有效值为：NOTINITED，INITED，STARTED，STOPPED |
| haState | string | ResourceManager HA状态-有效值为：INITIALIZING，ACTIVE，STANDBY，STOPPED |
| rmStateStoreName | string | 实现ResourceManager状态存储的类的完全限定名称 |
| resourceManagerVersion | string | ResourceManager的版本 |
| resourceManagerBuildVersion | string | ResourceManager构建字符串以及构建版本，用户和校验和 |
| resourceManagerVersionBuiltOn | string | 生成ResourceManager的时间戳（自纪元以来以毫秒为单位） |
| hadoopVersion | string | Hadoop通用版本 |
| hadoopBuildVersion | string | 具有构建版本，用户和校验和的Hadoop通用构建字符串 |
| hadoopVersionBuiltOn | string | 建立hadoop common的时间戳（自纪元以来以毫秒为单位） |
| haZooKeeperConnectionState | string | ZooKeeper高可用性服务的连接状态 |
集群指标
通过GET请求rm-http-address:port/ws/v1/cluster/metrics来完成。
通过GET请求上面URI，如
http://cdh-1:8088/ws/v1/cluster/metrics请求参数： 无
返回数据
{
"clusterMetrics": {
"appsSubmitted": 547,
"appsCompleted": 506,
"appsPending": 0,
"appsRunning": 8,
"appsFailed": 14,
"appsKilled": 19,
"reservedMB": 0,
"availableMB": 36864,
"allocatedMB": 45056,
"reservedVirtualCores": 0,
"availableVirtualCores": 8,
"allocatedVirtualCores": 32,
"containersAllocated": 16,
"containersReserved": 0,
"containersPending": 0,
"totalMB": 81920,
"totalVirtualCores": 40,
"totalNodes": 5,
"lostNodes": 0,
"unhealthyNodes": 0,
"decommissioningNodes": 0,
"decommissionedNodes": 0,
"rebootedNodes": 0,
"activeNodes": 5,
"shutdownNodes": 0
}
}返回数据字段说明
| Item | Data Type | Description |
|---|---|---|
| appsSubmitted | int | 提交的应用程序数量 |
| appsCompleted | int | 完成的应用程序数量 |
| appsPending | int | 等待的应用程序数量 |
| appsRunning | int | 正在运行的应用程序数量 |
| appsFailed | int | 失败的应用程序数量 |
| appsKilled | int | 被杀死的应用程序数量 |
| reservedMB | long | 保留的内存量（MB） |
| availableMB | long | 可用的内存量（MB） |
| allocatedMB | long | 分配的内存量（MB） |
| totalMB | long | 总内存量（MB） |
| reservedVirtualCores | long | 保留的虚拟核心数 |
| availableVirtualCores | long | 可用虚拟核心数 |
| allocatedVirtualCores | long | 分配的虚拟核心数 |
| totalVirtualCores | long | 虚拟核心总数 |
| containersAllocated | int | 分配的容器数 |
| containersReserved | int | 保留的容器数 |
| containersPending | int | 待处理的容器数 |
| totalNodes | int | 节点总数 |
| activeNodes | int | 活动节点数 |
| lostNodes | int | 丢失的节点数 |
| unhealthyNodes | int | 不良节点数 |
| decommissioningNodes | int | 停用的节点数 |
| decommissionedNodes | int | 退役的节点数 |
| rebootedNodes | int | 重新启动的节点数 |
| shutdownNodes | int | 关闭的节点数 |
集群调度
调度程序资源包含有关集群中配置的当前调度程序的信息。它目前支持Fifo，容量和公平调度程序。根据配置哪个调度程序，您将获得不同的信息，因此请务必查看类型信息。
请求URI
http://cdh-1:8088/ws/v1cluster/scheduler请求参数： 无
返回数据
{
"scheduler": {
"schedulerInfo": {
"type": "fairScheduler",
"rootQueue": {
"maxApps": 2147483647,
"minResources": {
"memory": 0,
"vCores": 0,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 16384,
"minimumAllocation": 1024,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 0
},
{
"maximumAllocation": 8,
"minimumAllocation": 1,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 0
}
]
}
},
"maxResources": {
"memory": 81920,
"vCores": 40,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 81920
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 40
}
]
}
},
"usedResources": {
"memory": 45056,
"vCores": 32,
"resourceInformations": {
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"units": "",
"value": 32
}
]
}
},
"amUsedResources": {
"memory": 9728,
"vCores": 8,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 9728
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 8
}
]
}
},
"amMaxResources": {
"memory": 40960,
"vCores": 20,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 40960
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 20
}
]
}
},
"demandResources": {
"memory": 45056,
"vCores": 32,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 45056
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 32
}
]
}
},
"steadyFairResources": {
"memory": 13654,
"vCores": 7,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 13654
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 7
}
]
}
},
"fairResources": {
"memory": 81920,
"vCores": 40,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 81920
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 40
}
]
}
},
"clusterResources": {
"memory": 81920,
"vCores": 40,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 81920
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 40
}
]
}
},
"reservedResources": {
"memory": 0,
"vCores": 0,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 0
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 0
}
]
}
},
"maxContainerAllocation": {
"memory": 16384,
"vCores": 8,
"resourceInformations": {
"resourceInformation": [
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "memory-mb",
"resourceType": "COUNTABLE",
"units": "Mi",
"value": 16384
},
{
"maximumAllocation": 9223372036854775807,
"minimumAllocation": 0,
"name": "vcores",
"resourceType": "COUNTABLE",
"units": "",
"value": 8
}
]
}
},
"allocatedContainers": 16,
"reservedContainers": 0,
"queueName": "root.users.root",
"schedulingPolicy": "fair",
"preemptable": true,
"numPendingApps": 0,
"numActiveApps": 8
}
]
}
}
]
}
}
}
}
}集群应用程序尝试API
使用应用程序尝试API，您可以获得代表应用程序尝试的资源的集合。在此资源上运行GET操作时，将获得App Attempt对象的集合。
请求URI
http://cdh-1:8088/ws/v1/cluster/apps/{appid}/appattempts请求参数： 无
返回数据
{
"appAttempts": {
"appAttempt": [
{
"id": 1,
"startTime": 1615272507648,
"finishedTime": 0,
"containerId": "container_1615272298938_0001_01_000001",
"nodeHttpAddress": "cdh-6:8042",
"nodeId": "cdh-6:8041",
"logsLink": "http://cdh-6:8042/node/containerlogs/container_1615272298938_0001_01_000001/root",
"blacklistedNodes": "",
"nodesBlacklistedBySystem": "",
"appAttemptId": "appattempt_1615272298938_0001_000001"
}
]
}
}| Item | Data Type | Description |
|---|---|---|
| id | string | 应用尝试ID |
| nodeId | string | 尝试运行的节点的节点ID |
| nodeHttpAddress | string | 尝试运行的节点的节点http地址 |
| logsLink | string | 应用程序尝试日志的http链接 |
| containerId | string | 应用尝试容器的ID |
| startTime | long | 尝试的开始时间（自纪元以来以毫秒为单位） |
