Sergey Shelukhin created HIVE-16992:
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Summary: LLAP: better default lambda for LRFU policy
Key: HIVE-16992
URL: https://issues.apache.org/jira/browse/HIVE-16992
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
LRFU is currently skewed heavily towards LRU; there are 10k-s or 100k-s of
buffers tracked during a typical workload, but the heap size is around 700. We
should see if making it closer to LFU (by tweaking the lambda) will improve hit
rate with small queries infrequently interleaved with large scans; and whether
it will have negative effects due to perf overhead.
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