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https://issues.apache.org/jira/browse/FLINK-23554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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JING ZHANG updated FLINK-23554:
-------------------------------
    Description: 
SqlCli would throws an exception like the following, and SqlCli would hang 
forever until kill the process outside.

You could reproduce the exception by the following step:
 # submit a SQL command in SQLCli, (for example {{SELECT 'Hello World';}})
 # does not wait for it response, input another SQL command in SQL Cli (for 
example:  {{SET execution.result-mode=table;}})
 # an exception would be thrown out, and SQLCli would hang

!image-2021-07-30-14-12-07-817.png|width=1706,height=527!

  was:
SqlCli would throws an exception like the following, and SqlCli would hang 
forever until kill the process outside.

You could reproduce the exception by the following step:
 # submit a SQL command in SQLCli
 # does not wait for it response, input another SQL command in SQL Cli
 # an exception would be thrown out, and SQLCli would hang

!image-2021-07-30-14-12-07-817.png|width=1706,height=527!


> SqlCli throws an exception and hang 
> ------------------------------------
>
>                 Key: FLINK-23554
>                 URL: https://issues.apache.org/jira/browse/FLINK-23554
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Client
>    Affects Versions: 1.11.3, 1.13.1, 1.12.4
>            Reporter: JING ZHANG
>            Priority: Minor
>         Attachments: image-2021-07-30-14-12-07-817.png
>
>
> SqlCli would throws an exception like the following, and SqlCli would hang 
> forever until kill the process outside.
> You could reproduce the exception by the following step:
>  # submit a SQL command in SQLCli, (for example {{SELECT 'Hello World';}})
>  # does not wait for it response, input another SQL command in SQL Cli (for 
> example:  {{SET execution.result-mode=table;}})
>  # an exception would be thrown out, and SQLCli would hang
> !image-2021-07-30-14-12-07-817.png|width=1706,height=527!



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