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I constructed a spring boot application to produce data in a Kafka, but now I need to connect this application to an old Kafka (0.11v). I tried just changing the bootstrap-server, but I receive connection errors.

I doubled checked if this Kafka instance is working, and other applications are connecting.

My question is if a new version of spring-Kafka like v2.5.4.RELEASE can connect to an old version of Kafka. Is there any configuration I can add to use legacy Kafka instances? I constructed a spring boot application to produce data in a Kafka, but now I need to connect this application to an old Kafka (0.11v). I tried just changing the bootstrap-server, but I receive connection errors.

I doubled checked if this Kafka instance is working, and other applications are connecting.

My question is if a new version of spring-Kafka like v2.5.4.RELEASE can connect to an old version of Kafka. Is there any configuration I can add to use legacy Kafka instances?

Cleverson Ledur
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1 Answers1

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In general, yes, as long as you don't use features provided by the newer brokers.

Backwards compatibility for the Java clients has been pretty good since 0.10.2.x.

There is a compatibility matrix here but it hasn't been updated since the 1.0.0 clients.

SK v2.5.4 uses the 2.5.0 clients (2.5.5 uses 2.5.1). I haven't tried connecting to such an old broker lately, what is the nature of the connection errors?

EDIT

I just ran a Boot app using Spring Kafka 2.5.5 against an 0.11.0.3 broker with no problems.

Gary Russell
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