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https://issues.apache.org/jira/browse/FLINK-16998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timo Walther closed FLINK-16998.
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Release Note: An additional change flag called `RowKind` was added to the
`Row` type. This changed the serialization format and will trigger a state
migration.
Resolution: Fixed
> Add a changeflag to Row type
> ----------------------------
>
> Key: FLINK-16998
> URL: https://issues.apache.org/jira/browse/FLINK-16998
> Project: Flink
> Issue Type: Sub-task
> Components: API / Core
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.11.0
>
>
> In Blink planner, the change flag of records travelling through the pipeline
> are part of the record itself but not part of the logical schema. This
> simplifies the architecture and API in many cases.
> Which is why we aim adopt the same mechanism for
> {{org.apache.flink.types.Row}}.
> Take {{tableEnv.toRetractStream()}} as an example that returns either Scala
> or Java {{Tuple2<Boolean, Row>}}. For FLIP-95 we need to support more update
> kinds than just a binary boolean.
> This means:
> - Add a changeflag {{RowKind}} to to {{Row}}
> - Update the {{Row.toString()}} method
> - Update serializers in backwards compatible way
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