TopicMetadataResponse response = consumer.send(request);
if (response.topicsMetadata().size() != 1) {
throw new RuntimeException("Expected one metadata for topic " + topic + " found " +
response.topicsMetadata().size());
}
TopicMetadata topicMetadata = response.topicsMetadata().get(0);
return topicMetadata.partitionsMetadata().size();
} finally {
if (consumer != null) {
consumer.close();
}
}