Maytee Chinavanichkit created KAFKA-6371:
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Summary: FetchMetadata creates unneeded Strings on instantiation
Key: KAFKA-6371
URL: https://issues.apache.org/jira/browse/KAFKA-6371
Project: Kafka
Issue Type: Bug
Affects Versions: 0.10.2.1, 0.10.1.1, 0.10.0.1
Reporter: Maytee Chinavanichkit
Assignee: Maytee Chinavanichkit
Priority: Minor
Fix For: 0.10.0.2, 0.10.1.2, 0.10.2.2
My colleague and I were taking a heap dump to investigate the memory usage of a
broker. From the dump, we saw a number of object strings with the message
{{onlyCommitted: <redacted>}} and {{partitionStatus: <redacted>]}}. Upon
investigation, these objects were being instantiated when the {{FetchMetadata}}
object is constructed. The toString method here is malformed and the last two
lines are executed as a block instead of being concatenated.
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