[jira] [Created] (SPARK-33311) Improve semantics for REFRESH TABLE

["Chao Sun (Jira)" <ji...@apache.org>]

Chao Sun created SPARK-33311:
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             Summary: Improve semantics for REFRESH TABLE
                 Key: SPARK-33311
                 URL: https://issues.apache.org/jira/browse/SPARK-33311
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.0.1
            Reporter: Chao Sun


Currently, the semantics for {{REFRESH TABLE t}} is not well defined for view (let's say {{view}}) that reference the table {{t}}:

1. If {{view}} is cached, the behavior is not well-defined. Should Spark invalidate the cache (current behavior) or recache it?
2. If {{view}} is a temporary view, currently refreshing {{t}} does not refresh {{view}} since it will just reuse the logical plan defined in the session catalog. This could lead to incorrect results.

I think we should clear define and document the behavior here, so that users won't get confused.



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