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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/01/29 18:11:29 UTC
[GitHub] [druid] ccaominh commented on issue #9278: Speed up joins on
indexed tables with string keys
ccaominh commented on issue #9278: Speed up joins on indexed tables with string keys
URL: https://github.com/apache/druid/pull/9278#issuecomment-579887920
> How do these numbers compare to the standard lookup case?
Lookups are about 5x faster:
```
Benchmark (columnCacheSizeBytes) Score Error Units
lookupVirtualColumnStringKey 0 3.374 ± 0.065 ms/op
lookupVirtualColumnStringKey 16384 3.364 ± 0.054 ms/op
lookupVirtualColumnStringKeyWithFilter 0 4.553 ± 0.114 ms/op
lookupVirtualColumnStringKeyWithFilter 16384 5.529 ± 0.305 ms/op
```
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