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how to create a ".avsc" file from avro header ?
Does the first line of content is a avsc file for that avro? Or does the avsc content should starts from : {"type":"record" upto "}avro?
I tried the above mentioned 2 steps but not able to generate expected avsc file?
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To decode Avro data, we should use from_avro () function and this function takes Avro schema string as a parameter. For our example, I am going to load this schema from a person.avsc file. For reference, below is Avro’s schema we going to use. The Schema defines the field names and data types.
To serialize the data using Avro, follow the steps as given below − Write an Avro schema. Compile the schema using Avro utility. You get the Java code corresponding to that schema. Populate the schema with the data. Serialize it using Avro library.
Generating C# code from Avro schemas Chr.Avrois capable of generating rudimentary C# class and enum definitions to match Avro’s record and enum schemas. If you have a complex Avro schema, but no matching .NET type, code generation can save a lot of time. Getting started If you haven’t already, install the Chr.AvroCLI:
The avro format has a generous data structure in which we can able to generate records having an array, enumerated type, and a sub-record. The avro format will have rich applicants for reserving the data in data lake landing blocks in which each block can object, size, a compressed object.
There are different ways to do this. You can to use using avro-tools like this
avro-tools -getschema youravrofile
Or programatically like this
DatumReader<GenericRecord> datumReader = new GenericDatumReader<>();
DataFileReader<GenericRecord> dataFileReader = new DataFileReader<>(new File("yourfile.avro"), datumReader);
Schema schema = dataFileReader.getSchema();
System.out.println(schema); // this will print the schema for you
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