Partition concept in Kafka - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the number of partitions when creating a Kafka topic.

Kafka

new NewTopic("my-topic", [1], (short) 1);

Drag options to blanks, or click blank then click option'

A0

B3

C-1

D"3"

Attempts:

3 left

💡 Hint

Common Mistakes

Using zero or negative numbers for partitions.

Using a string instead of an integer.

The number of partitions must be a positive integer. Here, 3 partitions are specified.

2fill in blank

medium

Complete the code to send a message to a specific partition in Kafka.

Kafka

producer.send(new ProducerRecord<>("my-topic", [1], "key", "value"));

Drag options to blanks, or click blank then click option'

A1

B"partition"

C"1"

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of an integer for partition.

Passing null when a specific partition is required.

The partition number must be an integer. Here, the message is sent to partition 1.

3fill in blank

hard

Fix the error in the code to correctly create a Kafka topic with partitions.

Kafka

NewTopic topic = new NewTopic("my-topic", [1], (short) 1);

Drag options to blanks, or click blank then click option'

A"3"

B0

C3

D-3

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of an integer.

Using zero or negative numbers.

The number of partitions must be a positive integer without quotes. Using 3 is correct.

4fill in blank

hard

Fill both blanks to create a ProducerRecord that sends a message to partition 2 with key "user1".

Kafka

ProducerRecord<String, String> record = new ProducerRecord<>("my-topic", [1], [2], "message");

Drag options to blanks, or click blank then click option'

A2

B"user1"

C"user2"

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping partition and key positions.

Using integers for keys or strings for partitions.

The first blank is the partition number 2 (integer), the second blank is the key "user1" (string).

5fill in blank

hard

Fill all three blanks to create a NewTopic with name "events", 4 partitions, and replication factor 2.

Kafka

NewTopic topic = new NewTopic([1], [2], (short) [3]);

Drag options to blanks, or click blank then click option'

A"events"

B4

C2

D"4"

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings for numbers.

Mixing up partitions and replication factor.

The topic name is "events" (string), partitions is 4 (integer), replication factor is 2 (short integer).