Kathiresan Selvaraj created CASSANDRA-21474:
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Summary: NoSpamLogger uses unbounded cache that could lead to
memory exhaustion
Key: CASSANDRA-21474
URL: https://issues.apache.org/jira/browse/CASSANDRA-21474
Project: Apache Cassandra
Issue Type: Bug
Reporter: Kathiresan Selvaraj
The {{NoSpamLogger}} class maintains an unbounded cache of log statement keys
without any eviction policy, which poses a memory leak risk.
* Unbounded cache growth: The {{lastMessage}} map in {{NoSpamLogger.java}}
uses a {{NonBlockingHashMap}} with no size limit or eviction policy.
* When log messages contain dynamic content (e.g., query strings in tombstone
warnings), each unique message creates a new cache entry.
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