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https://issues.apache.org/jira/browse/BEAM-7829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900175#comment-16900175
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Ryan Skraba commented on BEAM-7829:
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The spark test suite for generating names and namespaces is here:
https://github.com/apache/spark/blob/022667cea666190bea651a3873234700a472326c/external/avro/src/test/scala/org/apache/spark/sql/avro/AvroSuite.scala#L1239
If we use the same Avro naming strategy, we can be inspired from these.
> AvroUtils.toAvroSchema should put a Schema name to pass Avro Schema validation
> ------------------------------------------------------------------------------
>
> Key: BEAM-7829
> URL: https://issues.apache.org/jira/browse/BEAM-7829
> Project: Beam
> Issue Type: Test
> Components: io-java-avro, sdk-java-core
> Reporter: Ismaël Mejía
> Assignee: Ryan Skraba
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> While trying to use an Avro PCollection with the SQL transform I notice you
> could not do correctly a bijective transform: PCollection<GenericRecord> ->
> SQL -> PCollection<Row> -> ParDo -> PCollection<GenericRecord> I noticed that
> some of the Avro metadata gets lost in particular the name of the Avro
> Schema. This is important because Avro validates that the schema has a name
> and if it does not it breaks with a ParseException.
> {quote}
> org.apache.avro.SchemaParseException: Illegal character in: EXPR$1
> at org.apache.avro.Schema.validateName (Schema.java:1151)
> at org.apache.avro.Schema.access$200 (Schema.java:81)
> at org.apache.avro.Schema$Field.<init> (Schema.java:403)
> at org.apache.avro.Schema$Field.<init> (Schema.java:423)
> at org.apache.avro.Schema$Field.<init> (Schema.java:415){quote}
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