[jira] [Created] (YARN-11403) Decommission Node reduces the maximumAllocation and leads to Job Failure

["Prabhu Joseph (Jira)" <ji...@apache.org>]

Prabhu Joseph created YARN-11403:
------------------------------------

             Summary: Decommission Node reduces the maximumAllocation and leads to Job Failure
                 Key: YARN-11403
                 URL: https://issues.apache.org/jira/browse/YARN-11403
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 3.3.4
            Reporter: Prabhu Joseph
            Assignee: Prabhu Joseph


When a node is put into Decommission, ClusterNodeTracker updates the maximumAllocation to the totalResources in use from that node. This could lead to Job Failure (with below error message) when the Job requests for a container of size greater than the new maximumAllocation.

{code}
22/11/03 10:55:02 WARN ApplicationMaster: Reporter thread fails 4 time(s) in a row.
org.apache.hadoop.yarn.exceptions.InvalidResourceRequestException: Invalid resource request! Cannot allocate containers as requested resource is greater than maximum allowed allocation. Requested resource type=[vcores], Requested resource=<memory:896, max memory:2147483647, vCores:2, max vCores:2147483647>, maximum allowed allocation=<memory:896, vCores:1>, please note that maximum allowed allocation is calculated by scheduler based on maximum resource of registered NodeManagers, which might be less than configured maximum allocation=<memory:122880, vCores:128>
{code}

**Repro:**

1. Cluster with two worker nodes - node1 and node2 each with YARN NodeManager Resource Memory 10GB and configured maxAllocation is 10GB.
2. Submit Spark Job (ApplicationMaster Size: 2GB, Executor Size: 4GB). Say ApplicationMaster (2GB) is launched on node1. (Add a wait condition in Spark before it requests for Executors)
3. Put node1 into Decommission and make node2 into UNHEALTHY. This makes maxAllocation to come down to 2GB.
4. Now notify the Spark Job. It requests for 4GB executor Size but the new maxAllocation is 2GB and so will fail.








--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-dev-help@hadoop.apache.org