CODEWITHSUNDEEP
javaapache-kafkajvmheap-memory
KWriter
KWriter

Reputation: 1184

What are heap sizes and how can I check the current settings?

I've never before came across the term "heap size" before. I've done some reading and I came to conclusion that command export KAFKA_HEAP_OPTS="-Xmx16G -Xms16G" would result in 16GB heap size.

I know that default size should be 512MB, but how can I check settings on the running Kafka server? Is checking the config file the only way to find out what are the current settings?

Upvotes: 0

Views: 2192

Answers (1)

OneCricketeer
OneCricketeer

Reputation: 191864

default size should be 512MB

In Kafka, it's actually 1G, by default.

You can look at the running processes on the machine, such as ps aux | grep KafkaServer on Unix, and look at the Xmx for max heap...

For finding current heap usage (over time), you'll need to hook up JVM monitoring tools like Prometheus JMX exporter.

Upvotes: 1

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