In-sync replicas (ISR) in Kafka - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to list the in-sync replicas (ISR) for a Kafka topic partition.

Kafka

isr = admin_client.describe_topics(['[1]'])

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Amy_topic

Breplica

Cpartition

Dbroker

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'partition' or 'replica' instead of the topic name.

The describe_topics method requires the topic name to fetch ISR info.

2fill in blank

medium

Complete the code to fetch the ISR list from the partition metadata.

Kafka

isr_list = partition_metadata.[1]

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Aisr

Breplicas

Cleader

Doffline_replicas

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'replicas' which lists all replicas, not just in-sync ones.

The isr attribute holds the list of in-sync replicas for the partition.

3fill in blank

hard

Fix the error in the code to correctly check if a replica is in the ISR set.

Kafka

if replica_id [1] partition_metadata.isr:
    print('Replica is in ISR')

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A==

B!=

Cnot in

Din

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' which compares equality, not membership.

Use in to check if replica_id is inside the ISR list.

4fill in blank

hard

Fill both blanks to create a dictionary of partitions with their ISR counts.

Kafka

isr_counts = {partition.partition: len(partition.[1]) for partition in topic_metadata.[2]

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Aisr

Bpartitions

Creplicas

Dleaders

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'replicas' instead of 'isr' for ISR count.

Each partition's ISR list is accessed by isr, and partitions are listed in partitions.

5fill in blank

hard

Fill all three blanks to filter partitions with ISR count less than 3.

Kafka

low_isr_partitions = {p.partition: len(p.[1]) for p in topic_metadata.[2] if len(p.[3]) < 3}

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Aisr

Bpartitions

Dreplicas

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'replicas' instead of 'isr' for ISR length.

We use isr to get the ISR list length and partitions to iterate all partitions.