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https://issues.apache.org/jira/browse/AVRO-973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Douglas Kaminsky updated AVRO-973:
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Attachment: AVRO-973-wrapper.patch
> Union behavior not consistent
> -----------------------------
>
> Key: AVRO-973
> URL: https://issues.apache.org/jira/browse/AVRO-973
> Project: Avro
> Issue Type: Bug
> Components: python
> Affects Versions: 1.6.1, 1.6.2
> Reporter: Gaurav Nanda
> Labels: patch
> Attachments: AVRO-973-patch-1.patch, AVRO-973-patch-2.patch,
> AVRO-973-patch-3.patch, AVRO-973-wrapper.patch, AVRO-973-wrapper.patch,
> test_unions.py
>
> Original Estimate: 0.25h
> Remaining Estimate: 0.25h
>
> Python's union does not respect the order in which type is specified.
> For following schema:
> {"type":"map","values":["int","long","float","double","string","boolean"]},
> an integer value is written as double, but it should respect the order in
> which types have been specified.
> Fixed Code (io.py):
> def write_union(self, writers_schema, datum, encoder):
> """
> A union is encoded by first writing a long value indicating
> the zero-based position within the union of the schema of its value.
> The value is then encoded per the indicated schema within the union.
> """
> # resolve union
> index_of_schema = -1
> for i, candidate_schema in enumerate(writers_schema.schemas):
> if validate(candidate_schema, datum):
> index_of_schema = i
> break // XXX Add break statement here XXX//
> if index_of_schema < 0: raise AvroTypeException(writers_schema, datum)
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