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https://issues.apache.org/jira/browse/AVRO-2037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16641603#comment-16641603
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Sameera Wijerathne commented on AVRO-2037:
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Hi,
I'm having the same performance issue. As you can see in below VTune output,
usage of boost:any makes performance of Avro C++ very poor. This is really
disappointing when Avro C++ version's performance becomes poor. Highly
appreciate if someone can look into this.
!image-2018-10-08-15-24-52-340.png!
> Use std::any where available
> ----------------------------
>
> Key: AVRO-2037
> URL: https://issues.apache.org/jira/browse/AVRO-2037
> Project: Avro
> Issue Type: Improvement
> Components: c++
> Reporter: Darryl Green
> Priority: Major
>
> The use of boost::any to hold union types causes a significant performance
> hit especially for small types - in particular the when using
> [null,primitive] for optional primitive type elements of a schema. Most
> (all?) implementations of std::any include a small value optimisation that
> avoids allocation overhead for scalars and other small types. Its a little
> unfortunate that the performance of a C++ binding of a notionally high
> performance serialization format performs so poorly in this case (note - I
> had previously proposed using boost::variant which would address this problem
> but would fail to support recursive types or truly huge numbers of distinct
> types in a union). Obviously this requires C++ 17 but could fall back to
> boost::any for older compilers.
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