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Fix IcebergIO failing to write EnumerationType (proto enum) fields - #40300
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ahmedabu98 merged 1 commit intoSep 30, 2026
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EnumerationType (used for proto enum fields) wasn't handled in IcebergUtils's Beam-to-Iceberg schema and row conversion. Writing a Row with such a field threw "Unsupported Beam logical type Enum" while deriving the table schema, and threw a ClassCastException converting the row's value even against a pre-existing table. Map EnumerationType to Iceberg's string type on write, the same way Avro and BigQuery already convert it. Fixes apache#40299
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LGTM, thanks for adding this!
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Fixes #40299
IcebergUtils didn't handle Row fields with the EnumerationType logical type (used for proto enums), so writing one threw
Unsupported Beam logical type Enumduring schema derivation, and a ClassCastException converting the row value even against a pre-existing table.Maps EnumerationType to Iceberg's string type on write, the same way Avro (
AvroUtils) and BigQuery (BigQueryUtils) already convert it.Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:
addresses #123), if applicable. This will automatically add a link to the pull request in the issue. If you would like the issue to automatically close on merging the pull request, commentfixes #<ISSUE NUMBER>instead.CHANGES.mdwith noteworthy changes.See the Contributor Guide for more tips on how to make review process smoother.
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