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https://issues.apache.org/jira/browse/HIVE-21264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16786354#comment-16786354
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Gopal V commented on HIVE-21264:
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[~belugabehr]: I don't think is correct because varchar(10) != char(10).
{code}
getClass() != other.getClass()
{code}
That was there to prevent it from going and assuming the types are identical.
> Improvements Around CharTypeInfo
> --------------------------------
>
> Key: HIVE-21264
> URL: https://issues.apache.org/jira/browse/HIVE-21264
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 4.0.0, 3.2.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Attachments: HIVE-21264.1.patch, HIVE-21264.2.patch
>
>
> The {{CharTypeInfo}} stores the type name of the data type (char/varchar) and
> the length (1-255). {{CharTypeInfo}} objects are often getting cached once
> they are created.
> The {{hashcode()}} and {{equals()}} of its sub-classes varchar and char are
> inconsistent.
> * Make hashcode and equals consistent (and fast)
> * Simplify the {{getQualifiedName}} implementation and reduce the scope to
> protected
> * Other related nits
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