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今天头一次接触了yarn的Rust API接口，在本地搭建了集群，能够得到每个任务的详细信息。

(一)得到所有任务的所有信息命令：

默认是json格式，也可以指定xml的格式，如(curl --compressed -H "Accept: application/xml" -X)

注意：这里的端口号是集群的resourceManager所在的节点

[root@node141 hadoop]# curl -X GET "http://node142:8088/ws/v1/cluster/apps"

由于返回的数据过多，这里截个图：

(二)得到指定任务的所有信息命令：

[root@node141 hadoop]# curl --compressed -H "Accept: application/json" -X GET "http://node142:8088/ws/v1/cluster/apps/application_1696942734063_0004"或者
curl -X GET http://node142:8088/ws/v1/cluster/apps/application_1696942734063_0004

返回结果：

{"app": {"id": "application_1696942734063_0004","user": "root","name": "word count","queue": "default","state": "FINISHED","finalStatus": "SUCCEEDED","progress": 100.0,"trackingUI": "History","trackingUrl": "http://node142:8088/proxy/application_1696942734063_0004/","diagnostics": "","clusterId": 1696942734063,"applicationType": "MAPREDUCE","applicationTags": "","priority": 0,"startedTime": 1696943373204,"launchTime": 1696943373820,"finishedTime": 1696943387557,"elapsedTime": 14353,"amContainerLogs": "http://node141:8042/node/containerlogs/container_1696942734063_0004_01_000001/root","amHostHttpAddress": "node141:8042","amRPCAddress": "node141:34142","masterNodeId": "node141:37268","allocatedMB": -1,"allocatedVCores": -1,"reservedMB": -1,"reservedVCores": -1,"runningContainers": -1,"memorySeconds": 48979,"vcoreSeconds": 26,"queueUsagePercentage": 0.0,"clusterUsagePercentage": 0.0,"resourceSecondsMap": {"entry": {"key": "memory-mb","value": "48979"},"entry": {"key": "vcores","value": "26"}},"preemptedResourceMB": 0,"preemptedResourceVCores": 0,"numNonAMContainerPreempted": 0,"numAMContainerPreempted": 0,"preemptedMemorySeconds": 0,"preemptedVcoreSeconds": 0,"preemptedResourceSecondsMap": {},"logAggregationStatus": "SUCCEEDED","unmanagedApplication": false,"amNodeLabelExpression": "","timeouts": {"timeout": [{"type": "LIFETIME","expiryTime": "UNLIMITED","remainingTimeInSeconds": -1}]}}
}

(三)过滤出state == "FINISHED"的json——失败

curl http://node142:8088/ws/v1/cluster/apps | jq '.apps.app[] | select(.state == "FINISHED")' > /opt/data/running_apps.json

[root@node141 ~]# cat /opt/data/running_apps.json 
{"id": "application_1696942734063_0001","user": "root","name": "word count","queue": "default","state": "FINISHED",......
}
{"id": "application_1696942734063_0002","user": "root","name": "word count","queue": "default","state": "FINISHED",......
}
{"id": "application_1696942734063_0003","user": "root","name": "word count","queue": "default","state": "FINISHED",......
}
{"id": "application_1696942734063_0004","user": "root","name": "word count","queue": "default","state": "FINISHED",......
}