IT23208: IT IS NOT POSSIBLE TO CONNECT TO MQTT WITHOUT A CLEAN SESSION

APAR status

• Closed as program error.

Error description

• Desc: When using the Mqtt nodes the clean session attribute is
  always set to true, meaning that any messages outstanding for
  the client are deleted upon connection. This is not always the
  behaviour that is desired, some use cases require messages to
  be retained. This APAR adds the environment variable
  MQSI_MQTT_DONT_CLEAN_SESSION. When this environment variable is
  set to any value then the nodes will set the clean session flag
  to false when connecting to Mqtt.
  
  A restart of the Integration Node is required for changes to
  this setting to take effect.
  
  Additional Symptom(s) Search Keyword(s):
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM Integration Bus version 10 using the MQTT
  nodes.
  
  
  Platforms affected:
  z/OS, MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When using the MQTT nodes the clean session attribute is always
  set to true, meaning that any messages outstanding for the
  client are deleted upon connection. This is not always the
  behaviour that is desired, some use cases require messages to be
  retained.
  

Problem conclusion

• This APAR adds the environment variable
  MQSI_MQTT_DONT_CLEAN_SESSION. When this environment variable is
  set to any value then the nodes will set the clean session flag
  to false when connecting to MQTT.
  
  A restart of the Integration Node is required for changes to
  this setting to take effect.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.12
  
  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