Kafka client 0.10.0.0 Java not getting duplicate record more than 2499

Question

I am using kafka client 0.10.0.0 and I am sending a file having 2800 records in it using

kafka-console-producer.sh --broker-list localhost:9092 --topic my_consumer_topic < 2800Rec.txt

But my client only reads 2499 records in poll.

One more thing when I send one non duplicate record then my consumer poll 2500 record. So is there anything in Kafka which only stores 2499 duplicate records in kafka.