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https://issues.apache.org/jira/browse/HIVE-21218?focusedWorklogId=399495&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-399495
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ASF GitHub Bot logged work on HIVE-21218:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Mar/20 01:31
Start Date: 07/Mar/20 01:31
Worklog Time Spent: 10m
Work Description: davidov541 commented on issue #933: HIVE-21218: Adding
support for Confluent Kafka Avro message format
URL: https://github.com/apache/hive/pull/933#issuecomment-596028873
@cricket007 That makes sense. I'm still concerned that the schema is present
at all in the build. I'm currently rebuilding some things due to mistakes on my
end, but I expect that this issue prevents anyone from using an Avro schema
with the name "SimpleRecord" at all, since it will use the one built into the
system, instead of theirs. I'll test it, but I do think that's something we can
solve separately, since the schema management piece is separate from the
skipping of bytes that this PR implements.
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Issue Time Tracking
-------------------
Worklog Id: (was: 399495)
Time Spent: 13h 40m (was: 13.5h)
> 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-21218.3.patch,
> HIVE-21218.4.patch, HIVE-21218.5.patch, HIVE-21218.6.patch,
> HIVE-21218.7.patch, HIVE-21218.patch
>
> Time Spent: 13h 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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