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https://issues.apache.org/jira/browse/FLINK-8854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16392843#comment-16392843
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ASF GitHub Bot commented on FLINK-8854:
---------------------------------------
Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/5662
Merging...
> Mapping of SchemaValidator.deriveFieldMapping() is incorrect.
> -------------------------------------------------------------
>
> Key: FLINK-8854
> URL: https://issues.apache.org/jira/browse/FLINK-8854
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Affects Versions: 1.5.0
> Reporter: Fabian Hueske
> Assignee: Timo Walther
> Priority: Blocker
> Fix For: 1.5.0
>
>
> The field mapping returned by {{SchemaValidator.deriveFieldMapping()}} is not
> correct.
> It should not only include all fields of the table schema, but also all
> fields of the format schema (mapped to themselves). Otherwise, it is not
> possible to use a timestamp extractor on a field that is not in table schema.
> For example this configuration would fail:
> {code}
> sources:
> - name: TaxiRides
> schema:
> - name: rideId
> type: LONG
> - name: rowTime
> type: TIMESTAMP
> rowtime:
> timestamps:
> type: "from-field"
> from: "rideTime"
> watermarks:
> type: "periodic-bounded"
> delay: "60000"
> connector:
> ....
> format:
> property-version: 1
> type: json
> schema: "ROW(rideId LONG, rideTime TIMESTAMP)"
> {code}
> because {{rideTime}} is not in the table schema.
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