Status

Current state:  Under Discussion Adopted (2.0)

Discussion thread: here 

Voting thread: here

JIRA: KAFKA-6874

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

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With the release of 2.0 Kafka Streams will introduce topology optimization, the goal of which is to reduce the footprint Kafka Streams creates especially with repartition and changelog topics. To that end, we would like to introduce a new config "enable.topology.optimization". The default value for this new configuration will be false"none". Kafka Streams needs this configuration to ensure backward compatibility.

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This KIP will add a new config "enable.topology.optimization" to the StreamsConfig class.  Setting ENABLE_TOPOLOGY_OPTIMIZATION to "trueall" will enable optimization, setting this configuration to "falsenone" or no value at all disables optimization.  The default setting is "falsenone".

public static final booleanString ENABLE_TOPOLOGY_OPTIMIZATION = "enable.topology.optimization" 
private static final String ENABLE_TOPOLOGY_OPTIMIZATION_DOC = "A configuration telling Kafka Streams if it should optimize the topology, falsenone by default"

Compatibility, Deprecation, and Migration Plan

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