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Gopal V commented on HIVE-16992: -------------------------------- LGTM - +1 The Parquet cache changes would be interesting to look through the new metrics, since I haven't tested that heavily yet. > LLAP: monitoring and better default lambda for LRFU policy > ---------------------------------------------------------- > > Key: HIVE-16992 > URL: https://issues.apache.org/jira/browse/HIVE-16992 > Project: Hive > Issue Type: Sub-task > Reporter: Sergey Shelukhin > Assignee: Sergey Shelukhin > Priority: Major > Attachments: HIVE-16992.patch > > > 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005)