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https://issues.apache.org/jira/browse/HIVE-12299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406219#comment-15406219
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Heye Vöcking commented on HIVE-12299:
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I would suggest to mark this story as a duplicate since it seems to be a subset
of HIVE-12274. Therefore, the focus can be concentrated on HIVE-12274.
> Hive Column Data Type definition in schema limited to 4000 characters - too
> small
> ---------------------------------------------------------------------------------
>
> Key: HIVE-12299
> URL: https://issues.apache.org/jira/browse/HIVE-12299
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Reporter: Lakshmi Ramakrishnan
>
> The data type definitions in the table schema are limited to 4K characters -
> as per the code here:
> https://github.com/apache/hive/tree/master/metastore/scripts/upgrade/derby
> I checked quickly and all meta stores have similar schema definition for the
> column type.
> Is there any reason why this limit is low? We had a table that had defined a
> struct, which had over 200 columns and the column names were rather verbose
> (for readability). This caused a non-obvious failure like
> FAILED: IllegalArgumentException Error: : expected at the end of
> 'string:array<struct<xyz:string, .....'. Is it possible to make this
> configurable or at least increase it to something much higher?
> Additionally, there is no validation error that communicates this limitation
> to the user, it required non-trivial debugging and looking into the table
> definitions when it failed trying to parse what was essentially a truncated
> type.
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