[jira] [Updated] (FLINK-36339) Remove java serialization from SQL serializers

["Weijie Guo (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-36339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weijie Guo updated FLINK-36339:
-------------------------------
    Affects Version/s: 2.1.0

> Remove java serialization from SQL serializers
> ----------------------------------------------
>
>                 Key: FLINK-36339
>                 URL: https://issues.apache.org/jira/browse/FLINK-36339
>             Project: Flink
>          Issue Type: Improvement
>    Affects Versions: 2.1.0
>            Reporter: Dawid Wysakowicz
>            Priority: Major
>             Fix For: 2.0.0
>
>
> Some of the serializers used in SQL use java serialization in their snapshots which introduces risks of state incompatibilities that are hard to fix. We've seen that already with FLINK-36318
> We should get rid off that. For serializing {{LogicalType}} I'd suggest using {{LogicalType#asSerializableString}}.
> For {{ArrayDataSerializerSnapshot}} and {{MapDataSerializerSnapshot}} we should properly implement {{CompositeTypeSerializerSnapshot}} interface instead of serializing nested {{TypeSerializers}}.
> Few of the affected classes:
> * https://github.com/apache/flink/blob/1ba890062d94edc4d9ea5431d44adaeb123d9607/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/typeutils/MapDataSerializer.java#L283
> * https://github.com/apache/flink/blob/1ba890062d94edc4d9ea5431d44adaeb123d9607/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/typeutils/ArrayDataSerializer.java#L302
> * https://github.com/apache/flink/blob/1ba890062d94edc4d9ea5431d44adaeb123d9607/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/typeutils/RowDataSerializer.java#L304



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