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Posted to commits@datasketches.apache.org by GitBox <gi...@apache.org> on 2019/07/02 22:31:33 UTC
[GitHub] [incubator-datasketches-java] himanshug commented on issue #263:
Theta sketch - Concurrent union implementation
himanshug commented on issue #263: Theta sketch - Concurrent union implementation
URL: https://github.com/apache/incubator-datasketches-java/issues/263#issuecomment-507868645
> updating threads write into a local buffer which is propagated in the background to a shared sketch
that sounds like there are extra threads doing things in the background. I wonder if that and needs for creating snapshot offsets(or worsens) the performance improvements received by removing the lock in the context of Druid. As bulk of the use case in Druid is single threaded access except for in-memory data on real time indexers as discussed in detail on https://lists.apache.org/thread.html/9899aa790a7eb561ab66f47b35c8f66ffe695432719251351339521a@%3Cdev.druid.apache.org%3E where the access is single-writer-multiple-reader
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