IT33614: HIGH CPU USAGE BY THE DATAFLOWENGINE PROCESS AFTER MQSISTOPMSGFLOW COMMAND TIMEOUT WITH BIP2242E ERROR MESSAGE.

APAR status

• Closed as program error.

Error description

• If a message flow with MQInput node is configured with
  additional instances and one of the message flow thread is hung
  then mqsistopmsgflow command fails with a BIP2242E error message
  in the broker syslog file. If another message flow thread is
  waiting for an input message then a high CPU usage is observed
  with the DataFlowEngine process after the BIP2242E error
  message.
  
  BIP2242E: Message flow 'MyMessageFlow' could not be reconfigured
  because it remained busy for longer than the timeout period of
  '300000'
  

Local fix

• Use the command 'mqsistopmsgflow {node} -e {server} -f
  restartExecutionGroup' to prevent the high CPU usage.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM App Connect Enterprise V11.0 and IBM
  Integration Bus V10.0 using the MQInput node with additional
  instances.
  
  
  Platforms affected:
  z/OS, MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  If a message flow with MQInput node is configured with
  additional instances and one of the message flow thread is hung
  then mqsistopmsgflow command fails with a BIP2242E error. If
  another message flow thread is waiting for an input message then
  a high CPU usage is observed on the DataFlowEngine process after
  the BIP2242E error message.
  
  BIP2242E: Message flow 'MyMessageFlow' could not be reconfigured
  because it remained busy for longer than the timeout period of
  '300000'
  

Problem conclusion

• The product no longer causes high cpu usage after BIP2242E error
  message.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.22
  v11.0      11.0.0.10
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels