The javadoc of the new producer is here for now - http://empathybox.com/kafka-javadoc/index.html?kafka/clients/producer/KafkaProducer.html
Thanks, Neha On Thu, May 1, 2014 at 9:16 PM, Jun Rao <jun...@gmail.com> wrote: > The new producer (that supports callbacks) is in trunk. It will be released > in 0.8.2. You can look at the java doc of KafkaProducer for the api. > > Thanks > > Jun > > > On Thu, May 1, 2014 at 8:43 PM, Christian Csar <cac...@gmail.com> wrote: > > > On 05/01/2014 07:22 PM, Christian Csar wrote: > > > I'm looking at using the java producer api for 0.8.1 and I'm slightly > > > confused by this passage from section 4.4 of > > > https://kafka.apache.org/documentation.html#theproducer > > > "Note that as of Kafka 0.8.1 the async producer does not have a > > > callback, which could be used to register handlers to catch send > errors. > > > Adding such callback functionality is proposed for Kafka 0.9, see > > > [Proposed Producer > > > API]( > > > https://cwiki.apache.org/confluence/display/KAFKA/Client+Rewrite#ClientRewrite-ProposedProducerAPI > ) > > ." > > > > > > org.apache.kafka.clients.producer.KafkaProducer in 0.8.1 appears to > have > > > public Future<RecordMetadata> send(ProducerRecord record, Callback > > > callback) which looks like the mentioned callback. > > > > > > How do the callbacks with the async producer? Is it as described in the > > > comment on the send method (see > > > > > > https://github.com/apache/kafka/blob/0.8.1/clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java#L151 > > > for reference)? > > > > > > Looking around it seems plausible the language in the documentation > > > might refer to a separate sort of callback that existed in 0.7 but not > > > 0.8. In our use case we have something useful to do if we can detect > > > messages failing to be sent. > > > > > > Christian > > > > > > > It appears that I was looking at the Java client rather than the Scala > > java api referenced by the documentation > > > > > https://github.com/apache/kafka/blob/0.8.1/core/src/main/scala/kafka/javaapi/producer/Producer.scala > > > > Are both of these currently suited for use from java and still > > supported? Given the support for callbacks in the event of failure I am > > inclined to use the Java one despite the currently limited support for > > specifying partitioners (though it supports specifying the partition) or > > encoders. > > > > Any guidance on this would be appreciated. > > > > Christian > > > > >
