Stefan Miklosovic created CASSANDRA-21557:
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Summary: Caffeine caches in CompressionDictionaryCache and
ZstdDictionaryCompressor should specify an executor explicitly
Key: CASSANDRA-21557
URL: https://issues.apache.org/jira/browse/CASSANDRA-21557
Project: Apache Cassandra
Issue Type: Bug
Components: Feature/Compression
Reporter: Stefan Miklosovic
We are not setting executor on these caches which means that Caffeine will run
stuff like {{removalListener}} on its default executor which is
ForkJoinPool.commonPool() which contends with everything else. There is a
pattern in Cassandra that each cache sets its own executor so we should do the
same.
We should use, most probably, ImmediateExecutor.INSTANCE
https://github.com/ben-manes/caffeine/blob/v3.1.8/caffeine/src/main/java/com/github/benmanes/caffeine/cache/Caffeine.java#L337
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