PowerFlex Management Platform: PowerFlex Gateway API Calls Failing Due to Java Heap Space

Summary: API calls from OpenStack and other similar integrations to PowerFlex Management Platform (PFMP) fail due to Java heap space exhaustion in the PowerFlex Gateway pods. Restarting the affected block-gateway pods temporarily resolves the issue. ...

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Symptoms

  • API calls to PowerFlex Manager (PFMP) intermittently fail, affecting OpenStack and other integrations.
  • block-gateway-0 pod reports OutOfMemoryError, and requests are redirected to block-gateway-1. 
    06:30:21.635 [|https-jsse-nio-443-exec-4-ReceiveLoop-254285513] ERROR c.e.e.n.c.LayeredProtocolConnection - LPC-254285513 #e1a663711aca639e [xxx.xxx.xxx.xxx:8611]: IOException in receive loop: message=null, e=java.io.EOFException, cause=null
06:30:21.635 [|https-jsse-nio-443-exec-5-ReceiveLoop-838015790] ERROR c.e.e.n.c.LayeredProtocolConnection - LPC-838015790 #ed300a36c5228121 [xxx.xxx.xxx.xxx:8611]: IOException in receive loop: message=null, e=java.io.EOFException, cause=null
06:30:23.475 [|https-jsse-nio-443-exec-11] ERROR c.e.s.s.w.c.SpecialImplController - Got an exception in handleException
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.OutOfMemoryError: Java heap space
  • Eventually, block-gateway-1 pod also reports OutOfMemoryError. 
    07:03:30.663 [|https-jsse-nio-443-exec-15] WARN  o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver - Failure in @ExceptionHandler com.emc.s3g.scaleio.web.controller.RestApiController#handleException(Exception, HttpServletRequest, HttpServletResponse)
java.lang.OutOfMemoryError: Java heap space
07:03:42.234 [|https-jsse-nio-443-exec-5-ReceiveLoop-793498724] ERROR c.e.e.n.c.LayeredProtocolConnection - LPC-793498724 #7f7d737257ceb2e0 [10.41.209.52:8611]: Problem with message deserialization
java.lang.OutOfMemoryError: Java heap space
07:03:42.234 [|https-jsse-nio-443-exec-12] ERROR c.e.s.s.s.ConnectionServiceImpl - Got rc MESSAGE_DESERIALIZATION_FAILED for command QueryPoll
  • catalina.out logs indicate failures in HostConfig.checkResources(), suggesting memory exhaustion during resource validation. 
    16-Jan-2025 06:31:21.628 SEVERE [Catalina-utility-2] org.apache.catalina.core.ContainerBase.threadStart Exception processing background thread
        Caused by: java.lang.OutOfMemoryError: Java heap space
                at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1298)
  • Resource metrics show no significant CPU or memory consumption by the affected gateway pods. 
    Namespace                   Name                                                     CPU Requests  CPU Limits  Memory Requests  Memory Limits  Age
---------                   ----                                                     ------------  ----------  ---------------  -------------  ---
powerflex                   block-legacy-gateway-1                                   0 (0%)        0 (0%)      0 (0%)           0 (0%)         56d
powerflex                   ciam-service-8c98989cb-5prsg                             100m (0%)     0 (0%)      128Mi (0%)       0 (0%)         56d
powerflex                   block-legacy-gateway-0                                   0 (0%)        0 (0%)      0 (0%)           0 (0%)         56d

Impact

  • API calls to PFMP fail intermittently, potentially affecting automation and management operations.
  • Gateway pods become unresponsive due to Java heap space exhaustion.
  • Manual intervention is required to restore service.

 

Cause

This issue is triggered by block-legacy-gateway POST requests and the following API requests: "/api/gatewayLogin", "/api/logout", and "/api/gatewayLogout". The pod handling these requests does not fully release the associated memory upon completion, leading to a memory leak.

 

Resolution

Restart the affected block-gateway pods using the following command:

kubectl -n powerflex rollout restart statefulset block-legacy-gateway

 

 

Additional Information

Impacted Versions

PFMP v4.6.0.x and v4.6.1

Fixed In Version

PFMP v4.6.2 and above

 

Article Properties
Article Number: 000297144
Article Type: Solution
Last Modified: 24 Mar 2025
Version:  1
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