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https://issues.apache.org/jira/browse/YARN-4954?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated YARN-4954:
------------------------------------------
    Issue Type: Sub-task  (was: Test)
        Parent: YARN-4478

> TestYarnClient.testReservationAPIs fails on machines with less than 4 GB 
> available memory
> -----------------------------------------------------------------------------------------
>
>                 Key: YARN-4954
>                 URL: https://issues.apache.org/jira/browse/YARN-4954
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: test
>    Affects Versions: 3.0.0
>            Reporter: Gergely Novák
>            Assignee: Gergely Novák
>            Priority: Minor
>         Attachments: YARN-4954.001.patch
>
>
> TestYarnClient.testReservationAPIs sometimes fails with this error:
> {noformat}
> java.lang.AssertionError: 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException:
>  The request cannot be satisfied
>       at 
> org.apache.hadoop.yarn.ipc.RPCUtil.getRemoteException(RPCUtil.java:38)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.submitReservation(ClientRMService.java:1254)
>       at 
> org.apache.hadoop.yarn.api.impl.pb.service.ApplicationClientProtocolPBServiceImpl.submitReservation(ApplicationClientProtocolPBServiceImpl.java:457)
>       at 
> org.apache.hadoop.yarn.proto.ApplicationClientProtocol$ApplicationClientProtocolService$2.callBlockingMethod(ApplicationClientProtocol.java:515)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:637)
>       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
>       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2422)
>       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2418)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:415)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1742)
>       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2416)
> Caused by: 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException:
>  The request cannot be satisfied
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.IterativePlanner.computeJobAllocation(IterativePlanner.java:151)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.PlanningAlgorithm.allocateUser(PlanningAlgorithm.java:64)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.PlanningAlgorithm.createReservation(PlanningAlgorithm.java:140)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.TryManyReservationAgents.createReservation(TryManyReservationAgents.java:55)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.reservation.planning.AlignedPlannerWithGreedy.createReservation(AlignedPlannerWithGreedy.java:84)
>       at 
> org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.submitReservation(ClientRMService.java:1237)
>       ... 10 more
>       at org.junit.Assert.fail(Assert.java:88)
>       at 
> org.apache.hadoop.yarn.client.api.impl.TestYarnClient.testReservationAPIs(TestYarnClient.java:1227)
> {noformat}
> This is caused by really not having enough available memory to complete the 
> reservation (4 * 1024 MB). In my opinion lowering the required memory (either 
> by lowering the number of containers to 2, or the memory to 512 MB) would 
> make the test more stable. 



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