[jira] [Closed] (FLINK-16998) Add a changeflag to Row type

["Timo Walther (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-16998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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