[GitHub] [dolphinscheduler] github-actions[bot] commented on issue #7671: [Bug] [task-plugin-sql] hive/impala datasource can not get connection, throw NullpointerException

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

github-actions[bot] commented on issue #7671:
URL: https://github.com/apache/dolphinscheduler/issues/7671#issuecomment-1001901772


   ### Search before asking
   
   -[X] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues.
   
   
   ### What happened
   
   ![image](https://user-images.githubusercontent.com/38685000/147537710-ecea98b0-25d4-468f-958b-5d298c1f5241.png)
   ![image](https://user-images.githubusercontent.com/38685000/147537750-9a017819-d590-430d-b8f9-9c5d0fc47f6c.png)
   Use JdbcDataSourceProvider.createOneSessionJdbcDataSource() method hive/impala to create the connection pool and set MaximumPoolSize=1, but the scheduling task is that generally, if hive/impala are multitasking at the same time, getConnection=null will occur, so SqlTask.prepareStatementAndBind() The method will throw a null pointer exception.
   
   
   
   
   ### What you expected to happen
   
   Why does the hive/impala connection pool need to create a connection pool with a capacity of 1?
   
   ### How to reproduce
   
   see what happened
   
   ### Anything else
   
   _No response_
   
   ### Version
   
   2.0.1
   
   ### Are you willing to submit PR?
   
   -[] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   -[X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)


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