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Posted to issues@spark.apache.org by "YoungGyu Chun (Jira)" <ji...@apache.org> on 2019/11/18 21:55:00 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 ]
YoungGyu Chun updated SPARK-29946:
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Attachment: image-2019-11-18-16-54-46-341.png
> 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: 3.0.0
> 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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