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https://issues.apache.org/jira/browse/BEAM-10516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Beam JIRA Bot updated BEAM-10516:
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Labels: Clarified beam-fixit stale-P2 (was: Clarified beam-fixit)
> Including TableProvider IO dependencies as `provided` can lead to
> ClassDefNotFoundErrors for users
> --------------------------------------------------------------------------------------------------
>
> Key: BEAM-10516
> URL: https://issues.apache.org/jira/browse/BEAM-10516
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql, sdk-java-core
> Reporter: Scott Lukas
> Priority: P2
> Labels: Clarified, beam-fixit, stale-P2
>
> The SQL extension uses ServiceLoader to load table providers:
> https://github.com/apache/beam/blob/v2.22.0/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/BeamCalciteSchemaFactory.java#L85
> And the IOs used in the built-in table providers (e.g. pubsub json, avro,
> parquet, ...) are included as {{provided}} dependencies, not {{compile}}.
> This means that we are able to build the sql extension jar, and AutoService
> picks them up and records them in META-INF/services. However because they are
> {{provided}} dependencies, the necessary IO modules are not marked as
> dependencies for the SQL extension.
> This means consumers of :sdks:java:extensions:sql (like
> :sdks:java:extensions:sql:jdbc) can end up with ServiceLoader registering a
> TableProvider that will fail with ClassDefNotFoundError, unless they add the
> necessary dependency.
> Possible solution: Refactor TableProvider to beam core (or another shared
> module) in order to solve Service Loader errors with
> SchemaCapableIOTableProviderWrapper. Remove getTableType overrides of
> SchemaCapableIOProviderWrapper when fixed.
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