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Status

Current state: Discussion

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Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

Motivation

KStream#print() prints records on console; But the output from KStream#print() is fixed, some user maybe want to customize it.

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"[" + this.streamName + "]: " + mapper.apply(keyToPrint, valueToPrint)

Public Interfaces

Argument KStream.print() which is KStream.print(KeyValueMapper<K, V, String>)

Proposed Changes

A straightforward first pass is on GitHub PR#3085.

Compatibility, Deprecation, and Migration Plan

No compatibility issues foreseen.

Rejected Alternatives

Base on KStream#print(), some users seek for a new option which can customize the output but not should be restricted by fixed format.

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