[Solved] Consider this snippet monitoring Kafka broker metrics in Java:double bytesIn = jmxClient.getAttribute("kafka.server:type=BrokerTopicMetrics,name=BytesInPerSec");double bytesOut = jmxClient.... | Kafka

Kafka - Monitoring and Operations

Consider this snippet monitoring Kafka broker metrics in Java:

double bytesIn = jmxClient.getAttribute("kafka.server:type=BrokerTopicMetrics,name=BytesInPerSec");
double bytesOut = jmxClient.getAttribute("kafka.server:type=BrokerTopicMetrics,name=BytesOutPerSec");
if (bytesIn > bytesOut) {
    System.out.println("More incoming data");
} else {
    System.out.println("More outgoing data");
}

What is the likely bug in this code?

AThe code does not handle the case when bytesIn equals bytesOut

BThe comparison should use >= to handle equal values

CThe metric names are incorrect and will cause an error

DThe JMX attribute values should be cast to int, not double

Step-by-Step Solution

Solution:

Step 1: Review the if-else logic
The code checks if bytesIn is greater than bytesOut, else prints "More outgoing data".
Step 2: Identify missing case handling
If bytesIn equals bytesOut, the else block runs, printing "More outgoing data" which is misleading.
Final Answer:
The code does not handle the case when bytesIn equals bytesOut -> Option A
Quick Check:
Equal values need explicit handling [OK]

Quick Trick: Check if equal values are handled in if-else [OK]

Common Mistakes:

MISTAKES

Assuming metric names are wrong
Ignoring equal value scenario
Casting to wrong data type without error

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More Kafka Quizzes

Consider this snippet monitoring Kafka broker metrics in Java:

Step 1: Review the if-else logic

Step 2: Identify missing case handling

Final Answer:

Quick Check:

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