Hi Lex, messages are batched (and compressed) after partitioning.
2014-08-19 15:46 GMT+02:00 Lian, Li <ll...@ebay.com>: > I am using Kafka 0.8 and message compression can only be enabled on > producer side. > > However one batch of messages (decided by the producer configuration > batch.num.messages) is compressed as a single message and stored at the > broker side. I think one batch compressed message will be stored at one > broker. > > I am wondering in this case how the producer side partitioner class will > work? The batch will be partitioned to the partition of the first or last > message in the batch? > > > Lex > >