read Avro file format from matlab issue

Question

younes 2024-4-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2108101-read-avro-file-format-from-matlab-issue

回答： Karanjot 2024-5-7

Hello,

i want to read avro file by using this script:

myReader = matlabavro.DataFileReader('myFile.avro'); %line 1
myReaderData = myReader.next(); %line 2

but matlab show me error related to this part of the scripte Schema.m

catch ME
                newException = MException(...
                    'matlabavro:Schema:getTypes', ...
                    "Unable to create matlabavro scheme objects for Avro Union types.");
                newException = newException.addCause(ME);
                throw(newException)
                end

can you help me guys

thanks

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Kautuk Raj 2024-4-22

You can share the file myFile.avro for better understanding and reproduction of the issue.

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Answer 1

Karanjot 2024-5-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2108101-read-avro-file-format-from-matlab-issue#answer_1453541

Hi younes,

The error you're encountering when trying to read an Avro file in MATLAB suggests that there's an issue with handling Avro Union types in your Avro schema. The MATLAB Avro API is throwing an exception because it's unable to create schema objects for the Union types defined in your Avro file's schema.

I recommend the following:

Check Avro Schema: Ensure that the Avro file's schema, especially Union types, is correctly defined and compatible with MATLAB's Avro API capabilities.
Ensure that you are using the latest version of the MATLAB Interface for Apache Avro.
Simplify Schema: If possible, simplify the Avro schema by modifying or reducing the complexity of Union types.