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https://issues.apache.org/jira/browse/BEAM-7624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17548060#comment-17548060
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Danny McCormick commented on BEAM-7624:
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This issue has been migrated to https://github.com/apache/beam/issues/19716
> Missing field support in JsonToRow
> ----------------------------------
>
> Key: BEAM-7624
> URL: https://issues.apache.org/jira/browse/BEAM-7624
> Project: Beam
> Issue Type: Improvement
> Components: extensions-java-json
> Reporter: Anton Kedin
> Priority: P3
> Labels: Clarified
>
> [JsonToRow|https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/JsonToRow.java]
> supports only strict schema matching, so it expects all the fields that are
> declared by the schema to be present in the input JSON data. If the field is
> missing, [it
> crashes|https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/util/RowJsonDeserializer.java#L114-L117].
> In practice it is useful to default to null is such cases. We should make it
> configurable in Beam Java SDK at least, and probably in Beam SQL (in Pubsub
> Json TableProvider) as well.
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