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

Motivation

Describe the problems you are trying to solve.We have the RemoteClusterUtils API to enable users to perform some operations of their MirrorMaker environment. One method, translateOffsets(), allows to manually translate consumer offsets. This is useful when MirrorCheckpointConnector is not configured to automatically sync offsets or when dealing with a disaster and unplanned failover. This method works by fully reading the checkpoints topic which is populated by MirrorCheckpointConnector, so this can be an expensive and take a long time if the topic is large. This method takes a single consumer group id as input so it makes it unusable when the offsets of several consumer groups have to be translated as each call re-reads the full topic. 

Public Interfaces

Briefly list any new interfaces that will be introduced as part of this proposal or any existing interfaces that will be removed or changed. The purpose of this section is to concisely call out the public contract that will come along with this feature.

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