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https://issues.apache.org/jira/browse/YARN-4954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245658#comment-15245658
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Junping Du commented on YARN-4954:
----------------------------------
Thanks [~GergelyNovak] for reporting this issue and deliver the patch. The fix
looks OK to me. However, the timeout issue still get report in TestYarnClient.
Can you investigate and fix it in the same JIRA?
> 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: Test
> 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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