[GitHub] [hudi] XuQianJin-Stars commented on a change in pull request #5145: [HUDI-2520] Fix CTAS statment issue when sync to hive

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

XuQianJin-Stars commented on a change in pull request #5145:
URL: https://github.com/apache/hudi/pull/5145#discussion_r837182121



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File path: hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/spark/sql/hudi/command/CreateHoodieTableCommand.scala
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@@ -167,10 +166,6 @@ object CreateHoodieTableCommand {
     if (!dbExists) {
       throw new NoSuchDatabaseException(dbName)
     }
-    // check table exists
-    if (sparkSession.sessionState.catalog.tableExists(table.identifier)) {
-      throw new TableAlreadyExistsException(dbName, table.identifier.table)
-    }

Review comment:
       > this is some behavior change: can you clarify why this is a reasonable change? above this line, we check if db exists and throw, why we don't check for table?
   
   Because the call to AtomicCreateTableAsSelectExec will execute stageCreate and the table already exists.
   <img width="821" alt="企业微信截图_8ba54b75-e42d-4391-8b61-f409b43449bc" src="https://user-images.githubusercontent.com/10494131/160564423-e3febd28-9be6-4ca6-a45e-1e9f024b9189.png">
   <img width="1066" alt="企业微信截图_92d63278-4106-44ae-b831-a938afa18404" src="https://user-images.githubusercontent.com/10494131/160564499-e06721fe-9e81-407a-8423-e88cd86bd87d.png">
   
   




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