[GitHub] [spark] imback82 opened a new pull request #26237: [SPARK-29526][SQL] REFRESH TABLE should look up catalog/table like v2 commands

[GitBox <gi...@apache.org>]

imback82 opened a new pull request #26237: [SPARK-29526][SQL] REFRESH TABLE should look up catalog/table like v2 commands 
URL: https://github.com/apache/spark/pull/26237
 
 
   ### What changes were proposed in this pull request?
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   Add UncacheTableStatement and make UNCACHE TABLE go through the same catalog/table resolution framework of v2 commands.
   
   ### Why are the changes needed?
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     1. If you propose a new API, clarify the use case for a new API.
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   It's important to make all the commands have the same table resolution behavior, to avoid confusing end-users. e.g.
   
   ```
   USE my_catalog
   DESC t // success and describe the table t from my_catalog
   UNCACHE TABLE t // report table not found as there is no table t in the session catalog
   ```
   ### Does this PR introduce any user-facing change?
   <!--
   If yes, please clarify the previous behavior and the change this PR proposes - provide the console output, description and/or an example to show the behavior difference if possible.
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   yes. When running UNCACHE TABLE, Spark fails the command if the current catalog is set to a v2 catalog, or the table name specified a v2 catalog.
   
   ### How was this patch tested?
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   New unit tests

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