[jira] [Updated] (HIVE-22944) Upgrade to Kryo5

["László Bodor (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-22944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

László Bodor updated HIVE-22944:
--------------------------------
    Attachment: kryo4_vs_5_benchmark.log

> Upgrade to Kryo5
> ----------------
>
>                 Key: HIVE-22944
>                 URL: https://issues.apache.org/jira/browse/HIVE-22944
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: László Bodor
>            Assignee: László Bodor
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-22944.01.patch, kryo4_vs_5_benchmark.log
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Maybe we should consider upgrading to kryo5 (plan ser/deser). Not sure about performance benefits, but looking at the code, e.g. FieldSerializer in Kryo5 seems to let us extend it easier (less private fields), which could be a benefit if we want to change its behavior, e.g. defining different logic for different fields of an object.
> Kryo 4 FieldSerializer: https://github.com/EsotericSoftware/kryo/blob/kryo-4/src/com/esotericsoftware/kryo/serializers/FieldSerializer.java
> Kryo 5 FieldSerialier: https://github.com/EsotericSoftware/kryo/blob/master/src/com/esotericsoftware/kryo/serializers/FieldSerializer.java
> UPDATE: currently we are at kryo 5.0.3
> TODO: why kryo-shaded artifact has been used so far?
> https://javalibs.com/artifact/com.esotericsoftware/kryo-shaded
> "This contains the shaded reflectasm jar to prevent conflicts with other versions of asm."



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