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Posted to issues@flink.apache.org by "Aljoscha Krettek (Jira)" <ji...@apache.org> on 2020/07/02 18:54:00 UTC

[jira] [Created] (FLINK-18478) AvroDeserializationSchema does not work with types generated by avrohugger

Aljoscha Krettek created FLINK-18478:
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             Summary: AvroDeserializationSchema does not work with types generated by avrohugger
                 Key: FLINK-18478
                 URL: https://issues.apache.org/jira/browse/FLINK-18478
             Project: Flink
          Issue Type: Bug
          Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
            Reporter: Aljoscha Krettek
            Assignee: Aljoscha Krettek
             Fix For: 1.9.1, 1.10.0


The main problem is that the code in {{SpecificData.createSchema()}} tries to reflectively read the {{SCHEMA$}} field, that is normally there in Avro generated classes. However, avrohugger generates this field in a companion object, which the reflective Java code will therefore not find.

This is also described in these ML threads:
 * [https://lists.apache.org/thread.html/5db58c7d15e4e9aaa515f935be3b342fe036e97d32e1fb0f0d1797ee@%3Cuser.flink.apache.org%3E]
 * [https://lists.apache.org/thread.html/cf1c5b8fa7f095739438807de9f2497e04ffe55237c5dea83355112d@%3Cuser.flink.apache.org%3E]



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