Map<String, ResultOrError<Uuid>> findTopicIds(long offset, Collection<String> names) {
        Map<String, ResultOrError<Uuid>> results = new HashMap<>(names.size());
        for (String name : names) {
            if (name == null) {
                results.put(null, new ResultOrError<>(INVALID_REQUEST, "Invalid null topic name."));
            } else {
                Uuid id = topicsByName.get(name, offset);
                if (id == null) {
                    results.put(name, new ResultOrError<>(
                        new ApiError(UNKNOWN_TOPIC_OR_PARTITION)));
                } else {
                    results.put(name, new ResultOrError<>(id));
                }
            }
        }
        return results;
    }
Timer for partition reassignment elect timeout.
metadata/src/main/java/org/apache/kafka/controller/ReplicationControlManager.java