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To satisfy the goal of keeping Kafka changes minimal when RLM is not configured, Kafka behavior remains unchanged for existing users.*

• Core Kafka starts RLM service if tiered storage is configured

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• When an offset index is not found, if RLM is configured, the read request is delegated to RLM to serve the data from the remote tier.

Serving Data from Remote Storage

 Approach 1

RLM will ship all the LogSegments and the corresponding OffsetIndex to RemoteStorage. A new index file, **<code>RemoteLogSegmentIndex,</code></strong> is maintained locally on the Kafka broker per topic-partition like all the existing index files are stored today as shown below:   

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