[jira] [Created] (YARN-2408) Resource Request REST API for YARN

[Renan DelValle (JIRA)]

Renan DelValle created YARN-2408:
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             Summary: Resource Request REST API for YARN
                 Key: YARN-2408
                 URL: https://issues.apache.org/jira/browse/YARN-2408
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: webapp
            Reporter: Renan DelValle
            Priority: Minor


I’m proposing a new REST API for YARN which exposes a snapshot of the Resource 
Requests that exist inside of the Scheduler. My motivation behind this new 
feature is to allow external software to monitor the amount of resources being 
requested to gain more insightful information into cluster usage than is 
already provided. The API can also be used by external software to detect a 
starved application and alert the appropriate users and/or sys admin so that 
the problem may be remedied.

Here is the proposed API:
{code:xml}
<resourceRequests>
  <MB>96256</MB>
  <VCores>94</VCores>
  <appMaster>
    <applicationId>application_</applicationId>
    <applicationAttemptId>appattempt_</applicationAttemptId>
    <queueName>default</queueName>
    <totalPendingMB>96256</totalPendingMB>
    <totalPendingVCores>94</totalPendingVCores>
    <numResourceRequests>3</numResourceRequests>
    <resourceRequests>
      <request>
        <MB>1024</MB>
        <VCores>1</VCores>
        <resourceName>/default-rack</resourceName>
        <numContainers>94</numContainers>
        <relaxLocality>true</relaxLocality>
        <priority>20</priority>
      </request>
      <request>
        <MB>1024</MB>
        <VCores>1</VCores>
        <resourceName>*</resourceName>
        <numContainers>94</numContainers>
        <relaxLocality>true</relaxLocality>
        <priority>20</priority>
      </request>
      <request>
        <MB>1024</MB>
        <VCores>1</VCores>
        <resourceName>master</resourceName>
        <numContainers>94</numContainers>
        <relaxLocality>true</relaxLocality>
        <priority>20</priority>
      </request>
    </resourceRequests>
  </appMaster>
</resourceRequests>
{code}



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