radai rosenblatt created KAFKA-9855:
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Summary: dont waste memory allocating Struct and values objects
for Schemas with no fields
Key: KAFKA-9855
URL: https://issues.apache.org/jira/browse/KAFKA-9855
Project: Kafka
Issue Type: Improvement
Components: core
Affects Versions: 2.4.1, 2.4.0
Reporter: radai rosenblatt
Assignee: radai rosenblatt
at the time of this writing there are 6 schemas in kafka APIs with no fields -
3 versions each of LIST_GROUPS and API_VERSIONS.
under some workloads this may result in the creation of a lot of Struct objects
with an Object[0] for values when deserializing those requests from the wire.
in one particular heap dump we've found a significant amount of heap space
wasted on creating such objects.
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