IT31440: KAFKA CONSUMER RECEIVING MESSAGES FROM THE WRONG TOPIC

APAR status

• Closed as program error.

Error description

• When two message flows containing Kafka Consumer subscribing to
  two different topics under two different applications are
  deployed on same Integrations Server, messages from wrong topic
  get delivered if the name of the two flows is identical.
  

Local fix

• Rename the flows to have unique names.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  <span style="background-color:rgb(255, 255, 255)">All users of
  IBM App Connect Enterprise V11.0 using  KAFKA nodes.</span>
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  If two, or more, applications are deployed to the same
  integration server and both applications contain a message flow
  with the same name and the message flows both contain a Kafka
  node (Consumer, Read or Producer) with the same name then the
  Kafka nodes will incorrectly share a single connector to connect
  to the Kafka server.
  
  This will mean that the second Kafka message flow node to
  initialise will use the same properties as the first Kafka
  message flow node.
  
  This may result in the second message flow sending or receiving
  messages from the same topic as the first message flow even when
  it specified a different topic
  

Problem conclusion

• The algorithm which is used to identify when a connector may be
  shared has been updated to ensure 'non-shared' connectors, such
  as Kafka, are not shared with any other message flow node.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v11.0      11.0.0.8
  
  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

  APP CONNECT ENT

• Fixed component ID

  5724J0550

Applicable component levels