[jira] [Commented] (AVRO-1332) Improve C# DatumReader performance

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-1332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13817748#comment-13817748 ] 

ASF subversion and git services commented on AVRO-1332:
-------------------------------------------------------

Commit 1540206 from [~cutting] in branch 'avro/trunk'
[ https://svn.apache.org/r1540206 ]

AVRO-1332.  Add missing files and fix a bug with defaults.  Contributed by David McIntosh.

> 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
>            Assignee: David McIntosh
>            Priority: Minor
>              Labels: performance
>             Fix For: 1.7.6
>
>         Attachments: AVRO-1332-2.patch, AVRO-1332-3.patch, AVRO-1332-4.patch, AVRO-1332-defaults-patch-only.patch, AVRO-1332-missing-files-plus-defaults-patch.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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