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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2020/03/16 22:55:04 UTC
[jira] [Updated] (SPARK-29946) Special serialization for certain
key types of Map type in JacksonGenerator
[ https://issues.apache.org/jira/browse/SPARK-29946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun updated SPARK-29946:
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Affects Version/s: (was: 3.0.0)
3.1.0
> Special serialization for certain key types of Map type in JacksonGenerator
> ---------------------------------------------------------------------------
>
> Key: SPARK-29946
> URL: https://issues.apache.org/jira/browse/SPARK-29946
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: L. C. Hsieh
> Priority: Major
> Attachments: image-2019-11-18-16-54-46-341.png
>
>
> Currently JacksonGenerator serializes MapType to JSON, the key of map is serialized by calling toString() of the key. For some types, like UnsafeRow, the toString is not human readable. So currently the map key in JSON is not very useful for some types.
> We should do special serialization for certain key types of Map.
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