Implement Log4j filter to deduplicate log messages - #19173

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andsel wants to merge 6 commits into

elastic:mainfrom

andsel:feature/deduplication_of_logs

Commits on May 28, 2026

Implemented a log4j filter that uses Guava's Bloom filter to check if a log message at certain level was already emitted
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21d80f9
Moved Bloom filter from CharSequence to String
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657241a
Inverted the condition on the Bloom filter, eventually permit the log only if not previously seen so that it avoid the false positive, being on the safe side of filter, where it's certain if an ele…
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3da4a29
[Test] renamed test
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05a9832
Minor, removed commented code
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4687dcb

Commits on Jun 16, 2026

Lowered maximum accepted falsePositiveProbability to 5% and log on status logger when defaulting becuase of invalid value
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16e9f87