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https://issues.apache.org/jira/browse/AVRO-4028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17871608#comment-17871608
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Karyna Bilotska commented on AVRO-4028:
---------------------------------------
Pull request: https://github.com/apache/avro/pull/3072
> Avro.AvroException: Unable to find type 'IDictionary<string, Foo>' in all
> loaded assemblies
> -------------------------------------------------------------------------------------------
>
> Key: AVRO-4028
> URL: https://issues.apache.org/jira/browse/AVRO-4028
> Project: Apache Avro
> Issue Type: Bug
> Reporter: Karyna Bilotska
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Here is an issue with Avro ISpecificRecord deserializing while using the
> Avro.Specific library.
> Scheme: *map in the map* (the simplified scheme example will be added in
> comments below)
> C# gererated property for ISpecificRecord:
> {code:java}
> IDictionary<string,IDictionary<string,Foo>> _changes;{code}
> {*}Problem{*}: Avro.Specific for .NET (C#) does not support nested
> IDictionary property deserializing (for example, IDictionary<string,
> IDictionary<string, Foo>>).
> The following error is raised when trying to deserialize the property I
> described above.
>
> {code:java}
> Avro.AvroException: Unable to find type 'IDictionary<string, Foo>' in all
> loaded assemblies{code}
>
> Here are also a couple of related *open* issues we found: *
> [https://stackoverflow.com/questions/56983940/how-to-handle-deserializing-avro-map-type-in-c-sharp]
> * [https://github.com/confluentinc/confluent-kafka-dotnet/issues/2019]
> *Additional info:*
> We use Confluent.SchemaRegistry.Serdes.Avro (Version="2.3.0), which use
> *Apache.Avro* *(Version="1.11.0")* under the hood.
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