PH70271: OTEL - SPAN DATA FOUND WITH NOOTELTRACE

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• With NOOTELTRACE set in a region that is the target of a
  function shipping request from a region with OTEL enabled, the
  target region still receives OTEL context data.
  
  This involves the following process:
  
  1. A HTTP request with OTEL data is received by a program in
     region A which has OTELPROP set.
  
  2. Via an IPIC or MRO connection, a function shipping request is
     made to region B which has NOOTELTRACE set.
  
  3. Region B incorrectly receives OTEL context from Region A.
  
  4. A DFHMNOTX EXTRACT_OTEL call in Region B then returns the
     OTEL trace parent information which should not have been
     propagated to Region B from Region A.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: OTEL data received in CICS region with  *
  *                      NOOTELTRACE set after a function        *
  *                      shipping request.                       *
  ****************************************************************
  A function shipping request is made from a program in a CICS
  region which contains OTEL context data and has OTELPROP set.
  This request is made to a separate CICS region which has OTEL
  disabled (NOOTELTRACE).
  
  This CICS region still receives OTEL context data, such as the
  trace ID, parent ID, and span ID. Since OTEL is disabled in this
  region, no OTEL context data should have been received by this
  region.
  

Problem conclusion

• CICS has been updated to ensure OTEL context data is not
  received when NOOTELTRACE is set during a function shipping
  request between CICS regions.
  

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:

  UO07539

Modules/Macros

• DFHXFX
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R600 PSY UO07539

     UP26/04/21 P F604  

Fix is available

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