APAR status
Closed as program error.
Error description
When messages are published to Kafka with the 'Acks' property on the Kafka producer node set to the value of zero the throughput of the producer node is slower than anticipated. When the Acks property is set to zero it is expected that the Kafka Producer node is providing the lowest quality of service however the producer node is waiting for the send operation to complete before allowing the message flow to continue. This fix allows the send operation to complete asynchronously and allow message flow operation to continue.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All users of IBM App Connect Enterprise 11.0, 12.0, and IBM Integration Bus V10.0 using Kafka Publication nodes with an Acks value of 0 (zero). Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: The throughput of the Kafka Producer node in a message flow with an Acks value of 0 (zero) is slower than what can be achieved using a standalone application written in Java.
Problem conclusion
Sending messages to Kafka using the Kafka Producer node with an Acks value of 0 (zero) is intended to be provide the maximum message throughput in exchange for sending messages at the lowest quality of service. However when the Kafka Producer node is configured in this way it was still performing a lookup in order to populate the local environment with the partition number and checksum values for each message sent. This additional lookup was responsible for the disparity in performance. As a result of this APAR, the partition number and checksum fields will not be written to the WrittenDestination in the Local Environment following a Kafka Producer node which is configured with an Acks value of 0 (zero). --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v10.0 10.0.0.25 v11.0 11.0.0.15 v12.0 12.0.2.0 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 number
IT37594
Reported component name
APP CONNECT ENT
Reported component ID
5724J0550
Reported release
B00
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-07-13
Closed date
2021-10-08
Last modified date
2021-10-08
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
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSDR5J","label":"IBM App Connect Enterprise"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"B00"}]
Document Information
Modified date:
13 October 2021