Why can't more than 32 cores be requested from YARN to complete a job?

Setting:

• Not. nodes: 3
• Not. cores: 32 cores per machine.
• RAM: 410 GB per machine
• Spark Version: 1.2.0
• Hadoop version: 2.4.0 (Hortonworks)

Purpose:

• I want to run a Spark job with more than 32 executor cores.

Problem:

When I request more than 32 executor cores for a Spark job, I get the following error:

Uncaught exception: Invalid resource request, requested virtual cores < 0, or requested virtual cores > max configured, requestedVirtualCores=150, maxVirtualCores=32
at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerUtils.validateResourceRequest(SchedulerUtils.java:212)
at org.apache.hadoop.yarn.server.resourcemanager.RMServerUtils.validateResourceRequests(RMServerUtils.java:96)
at org.apache.hadoop.yarn.server.resourcemanager.ApplicationMasterService.allocate(ApplicationMasterService.java:501)
at org.apache.hadoop.yarn.api.impl.pb.service.ApplicationMasterProtocolPBServiceImpl.allocate(ApplicationMasterProtocolPBServiceImpl.java:60)
at org.apache.hadoop.yarn.proto.ApplicationMasterProtocol$ApplicationMasterProtocolService$2.callBlockingMethod(ApplicationMasterProtocol.java:99)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:962)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2039)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2035)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2033)

      

        
        
        
      

    

Here are some properties from my yarn-site.xml file:

<property>
  <name>yarn.nodemanager.resource.memory-mb</name>
  <value>400000</value>
</property>
<property>
  <name>yarn.scheduler.minimum-allocation-mb</name>
  <value>3072</value>
</property>

      

        
        
        
      

    

From the top to properties, I thought I could request 400k / 3072 = ~ 130 cores. But that still limits me to 32. How can I assign more than 32 executor cores to Spark?

Please let me know if more information is needed and I will update the question.

EDIT 1:

Vcore settings from yarn-site.xml file

<property>
  <name>yarn.nodemanager.resource.cpu-vcores</name>
  <value>2</value>
</property>