ASF GitHub Bot commented on AVRO-2090:

rstata commented on issue #256: AVRO-2090: Improve encode/decode time for 
SpecificRecord using code generation
URL: https://github.com/apache/avro/pull/256#issuecomment-379423675
   BTW, I believe that Thiru presented a bit of this work at Strata last Fall:

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> Improve encode/decode time for SpecificRecord using code generation
> -------------------------------------------------------------------
>                 Key: AVRO-2090
>                 URL: https://issues.apache.org/jira/browse/AVRO-2090
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>            Reporter: Raymie Stata
>            Assignee: Raymie Stata
>            Priority: Major
>         Attachments: customcoders.md
> Compared to GenericRecords, SpecificRecords offer type-safety plus the 
> performance of traditional getters/setters/instance variables.  But these are 
> only beneficial to Java code accessing those records.  SpecificRecords 
> inherit serialization and deserialization code from GenericRecords, which is 
> dynamic and thus slow (in fact, benchmarks show that serialization and 
> deserialization is _slower_ for SpecificRecord than for GenericRecord).
> This patch extends record.vm to generate custom, higher-performance encoder 
> and decoder functions for SpecificRecords.  We've run a public benchmark 
> showing that the new code reduces serialization time by 2/3 and 
> deserialization time by close to 50%.

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