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Run first Kafka Produce-Consumer Demo - Inside Kafka (3)

Firstly, go through the first part of producer sending the message

The ProduceRecord has 6 main properties:
a. topic: the topic the record will be tiered with.
b. partition: the partition which the record will be sent to
c. timestamp: the timestamp the record is marked. null to use System.currentTimeMills()
d. key:
e: value:
f: header:

let's the check the main core line of send the message from KafkaProducer.doSend:

RecordAccumulator.RecordAppendResult result = accumulator.append(tp, timestamp, serializedKey,        serializedValue, headers, interceptCallback, remainingWaitMs);

all other lines are used to collect data for this method:
tp: TopicPartition the destination where the message will go
timestamp: the created time of record
serializedKey: the bytes of message key value.
serializedValue: the bytes of message body value.
headers:
interceptCallback:
remainingWaitMs:


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