Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/13989
Test cases are not enough to cover the metadata refreshing. The current
metadata cache is only used for data source tables. We still could convert Hive
tables to data source tables. For example, parquet and orc. Thus, we also need
to check the behaviors of these cases.
Try to design more test cases for metadata refreshing, including both
positive and negative cases.
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