JR63374: SUBSCRIPTION DOES NOT SHUT DOWN WHEN THE NUMBER OF KAFKA WRITER THREADS ASSIGNED TO IT IS LESS THAN THE NUMBER OF TABLE MAPPINGS

APAR status

• Closed as program error.

Error description

• If the number of Kafka writer threads is less than the number
  of table mappings, then a timing condition can occur that
  causes all writer threads to stop prematurely. This prevents a
  subscription from shutting down as the apply thread is still
  waiting for pending tasks. The number of Kafka writer threads
  could be determined by analyzing IDR instance traces: The Kafka
  writer uses "X" threads for publishing.
  

Local fix

• Use shutdown immediate instead of shutdown normal.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * This issue may affect you if you are using IDR 11.4.0.3-5590 *
  * or older for Kafka.                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Replication was not ending if the number of Kafka producers  *
  * is less than the number of table mappings in the             *
  * subscription.                                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to IDR 11.4.0.3-5593 or newer for Kafka.             *
  ****************************************************************
  

Problem conclusion

• Upgrading to IDR 11.4.0.3-5593 or newer for Kafka resolves the
  issue.
  

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

  IDR KAFKA

• Fixed component ID

  5725E30KA

Applicable component levels