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https://issues.apache.org/jira/browse/AVRO-1332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763191#comment-13763191
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Doug Cutting commented on AVRO-1332:
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The batch size=1000 seems like the case we care most about. This is faster in
all cases except when serializing a complex record. Any idea why this is now
slower? Also, I wonder if some of the resolution can be cached, in order to
keep the smaller batch sizes more competitive too?
> Improve C# DatumReader performance
> ----------------------------------
>
> Key: AVRO-1332
> URL: https://issues.apache.org/jira/browse/AVRO-1332
> Project: Avro
> Issue Type: Improvement
> Components: csharp
> Affects Versions: 1.7.5
> Reporter: David McIntosh
> Priority: Minor
> Labels: performance
> Attachments: AVRO-1332-2.patch, AVRO-1332.patch
>
>
> The current implementations of the C# datum readers perform resolution of the
> reader and writer schema on every call to Read. In my tests this was causing
> it to perform poorly when reading a large number of records (slower than
> parsing the same data from delimited text files). It would be more efficient
> if the reader only needed to resolve the schemas once.
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