yaooqinn opened a new pull request #28231: [SPARK-31458][SQL] LOAD DATA support 
for builtin datasource tables
URL: https://github.com/apache/spark/pull/28231
 
 
   ### What changes were proposed in this pull request?
   
   LOAD DATA support for builtin file-based datasource tables, such as parquet, 
orc, etc.
   
   
   This PR simply changes the condition check for failing datasource tables. 
(Maybe we should add a config to leave it to end-users to decide whether their 
source can support load data)
   
   ### Why are the changes needed?
   
   LOAD DATA is banned for datasource tables
   
   ### Does this PR introduce any user-facing change?
   
   yes, LOAD DATA will not fail for datasouce tables with specific format
   
   ### How was this patch tested?
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   add new tests;
   

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