KIP-118 — Drop Support for Java 7

Accepted Kafka 2.0 Client

Drops official support and build compatibility for Java 7 in Kafka 2.0, requiring Java 8 as the minimum runtime. Java 7 reached end-of-life in April 2015 and contains unpatched security vulnerabilities; supporting it constrained Kafka's ability to use Java 8 language features (lambdas, streams, default methods) and APIs like CompletableFuture.

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