leventov opened a new issue #4773: In-app segment cache control instead of relying on Linux page cache subsystem URL: https://github.com/apache/incubator-druid/issues/4773 This would allow to avoid cache trashing when a random query comes and pulls a lot of (otherwise unused) segments into memory. Also very simple heuristics, like giving preference to segments of more recent intervals, could improve the cache efficiency.
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