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https://issues.apache.org/jira/browse/AVRO-2579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17301578#comment-17301578
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Enrico Olivelli commented on AVRO-2579:
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This change to ReflectData changed the way Avro created automatically a schema
from a POJO class.
I know that it already was unpredictable because it depended by how the JVM
returns the order of fields, and this behaviour changed a few times during Java
lifetime.
is it possible to rollback or to add a system property in order to allow used
to decide the order ?
The order of fields in Avro is very important and people that will upgrade from
1.9 to 1.10 will have serious problems.
> Test can fail with a different order of fields reflected
> --------------------------------------------------------
>
> Key: AVRO-2579
> URL: https://issues.apache.org/jira/browse/AVRO-2579
> Project: Apache Avro
> Issue Type: Bug
> Reporter: contextshuffling
> Priority: Minor
> Fix For: 1.10.0
>
>
> {{org.apache.avro.reflect.TestReflect#testAvroDoc compares the toString()
> version of the DocTest.class. It uses java.lang.Class.getDeclaredFields() to
> get the fields. However, this API does not guarantee the order of fields that
> gets returned. So test may fails due to a different order.}}
> {{https://github.com/contextshuffling/avro/blob/f9399780bfafd46bce1292da314f15b90f869572/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java#L1319}}
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