[jira] [Updated] (KAFKA-5387) [Kafka Producer] - expose cluster metadata

["Bart Vercammen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-5387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bart Vercammen updated KAFKA-5387:
----------------------------------
    Component/s: producer 

> [Kafka Producer] - expose cluster metadata
> ------------------------------------------
>
>                 Key: KAFKA-5387
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5387
>             Project: Kafka
>          Issue Type: Improvement
>          Components: producer 
>    Affects Versions: 0.10.2.1
>            Reporter: Bart Vercammen
>
> Kafka producer has a method to expose the number of partitions for a specific topic.
> {noformat}    public List<PartitionInfo> partitionsFor(String topic) {
>         try {
>             return waitOnMetadata(topic, null, maxBlockTimeMs).cluster.partitionsForTopic(topic);
>         } catch (InterruptedException e) {
>             throw new InterruptException(e);
>         }
>     }
> {noformat}
> Instead of only returning the number of available partitions for a topic, it would be nice that the entire cluster metadata is exposed to the caller.
> This way we can make use of the partitioners in a more dynamic way.
> Something like this maybe : 
> {noformat}public Cluster clusterMetaData() {noformat}
> Or, maybe even better, have the possibility to provide a partitioner when producing data on kafka, instead of only a specific partition number or a globally configured partitioner-class.
> {noformat}
> public Future<RecordMetadata> send(ProducerRecord<K, V> record, Partitioner partitioner, Callback callback)
> {noformat}
> Any suggestions or comments?



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