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https://issues.apache.org/jira/browse/IMPALA-13544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihaly Szjatinya resolved IMPALA-13544.
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Resolution: Fixed
> Expose TRANSLATED_TO_EXTERNAL property in SHOW CREATE TABLE
> -----------------------------------------------------------
>
> Key: IMPALA-13544
> URL: https://issues.apache.org/jira/browse/IMPALA-13544
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Reporter: Gabor Kaszab
> Assignee: Mihaly Szjatinya
> Priority: Major
> Labels: ramp-up
>
> When Impala creates a managed table (without the external keyword) HMS will
> in fact create it as an external table anyway. When doing this under the hood
> conversion HMS sets the TRANSLATED_TO_EXTERNAL table property to true so that
> it can later on see if the table was explicitly created as external or not.
> There is some logic that depends on the value of this field. For instance
> when renaming a table the folder of the could be also renamed based on how
> this table property is set.
> When we issue a SHOW CREATE TABLE in impala this property is not visible in
> the output, as a result the output is the same regardless of the table was
> created as external or was converted to by HMS under the hood. Hive on the
> other hand shows this property in the output of SHOW CREATE TABLE.
> My proposal is to add an improvement to Impala to show the
> TRANSLATED_TO_EXTERNAL property in the SHOW CREATE TABLE output. Otherwise,
> creating a table based on the SHOW CREATE TABLE output wouldn't be the same
> table, for instance when being renamed it could have a different behaviour
> when it comes to renaming the folder.
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