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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/06/22 15:08:40 UTC
[GitHub] [incubator-druid] ebortnik commented on issue #5698: Oak: New
Concurrent Key-Value Map
ebortnik commented on issue #5698: Oak: New Concurrent Key-Value Map
URL: https://github.com/apache/incubator-druid/issues/5698#issuecomment-504673413
@jihoonson chiming in here, too .. I believe 60% throughput degradation attributes to GC. The JVM just doesn't have enough headroom for the heap. The data itself is 3.8 GB (<1/3 GB of the managed RAM), all pre-generated prior to the test. OakIncrementalIndex is pretty immune to scaling (10% slowdown is organic to search as the data structure grows).
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