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We will add a new configuration `default.api.timeout.ms` to the AdminClient. We will also update the default values for `retries` and `request.timeout.ms`. The table below summarizes the changes.

Proposed Changes

We will introduce a new `default.api.timeout.ms` (named for consistency with a similar config in the consumer). If no explicit timeout has been provided in the Options argument for a given method, this value will be used. We will also adjust the default number of retries to be effectively unlimited. We will preserve the current behavior of failing an operation when either the timeout or the maximum number of retries has been reached.

We also change the default request timeout since it is now decoupled from the api timeout. Note that each admin API allows for an override of the api timeout through its Options class (e.g. `CreateTopicsOptions`). We will not initially allow request timeout overrides, though this remains a potential improvement for the future.

Compatibility, Deprecation, and Migration Plan

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