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https://issues.apache.org/jira/browse/HIVE-9500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14295972#comment-14295972
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Thejas M Nair commented on HIVE-9500:
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To summarize, I felt users are less likely to shoot themselves in the foot with
the limit of 24 chars (in case they didn't escape), and are dealing with
'normal' english chars.
> Support nested structs over 24 levels.
> --------------------------------------
>
> Key: HIVE-9500
> URL: https://issues.apache.org/jira/browse/HIVE-9500
> Project: Hive
> Issue Type: Improvement
> Reporter: Aihua Xu
> Labels: SerDe
>
> Currently we support up to 24 levels of nested structs when
> hive.serialization.extend.nesting.levels is set to true, while the customers
> have the requirement to support more than that.
> It would be better to make the supported levels configurable or completely
> removed (i.e., we can support any number of levels).
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