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Posted to issues@hive.apache.org by "David McGinnis (Jira)" <ji...@apache.org> on 2020/03/03 16:33:00 UTC
[jira] [Assigned] (HIVE-21218) KafkaSerDe doesn't support topics
created via Confluent Avro serializer
[ https://issues.apache.org/jira/browse/HIVE-21218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David McGinnis reassigned HIVE-21218:
-------------------------------------
Assignee: David McGinnis (was: Milan Baran)
> KafkaSerDe doesn't support topics created via Confluent Avro serializer
> -----------------------------------------------------------------------
>
> Key: HIVE-21218
> URL: https://issues.apache.org/jira/browse/HIVE-21218
> Project: Hive
> Issue Type: Bug
> Components: kafka integration, Serializers/Deserializers
> Affects Versions: 3.1.1
> Reporter: Milan Baran
> Assignee: David McGinnis
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21218.2.patch, HIVE-21218.patch
>
> Time Spent: 4h 40m
> Remaining Estimate: 0h
>
> According to [Google groups|https://groups.google.com/forum/#!topic/confluent-platform/JYhlXN0u9_A] the Confluent avro serialzier uses propertiary format for kafka value - <magic_byte 0x00><4 bytes of schema ID><regular avro bytes for object that conforms to schema>.
> This format does not cause any problem for Confluent kafka deserializer which respect the format however for hive kafka handler its bit a problem to correctly deserialize kafka value, because Hive uses custom deserializer from bytes to objects and ignores kafka consumer ser/deser classes provided via table property.
> It would be nice to support Confluent format with magic byte.
> Also it would be great to support Schema registry as well.
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