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https://issues.apache.org/jira/browse/FLINK-33116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17774319#comment-17774319
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Jiabao Sun commented on FLINK-33116:
------------------------------------
Steps to reproduce:
thread1 -> CliClient.executeInInteractiveMode
thread1 -> CliClient.closeTerminal
main -> CliClient.close
main -> CliClient.closeTerminal
thread1 -> CliClient.closeTerminal# { terminal = null; }
main -> CliClient.closeTerminal# { terminal.close(); } // NPE will cause
!screenshot-1.png!
!screenshot-2.png!
!screenshot-3.png!
!screenshot-4.png!
!screenshot-5.png!
> CliClientTest.testCancelExecutionInteractiveMode fails with NPE on AZP
> ----------------------------------------------------------------------
>
> Key: FLINK-33116
> URL: https://issues.apache.org/jira/browse/FLINK-33116
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Client
> Affects Versions: 1.19.0
> Reporter: Sergey Nuyanzin
> Priority: Critical
> Labels: stale-critical, test-stability
> Attachments: screenshot-1.png, screenshot-2.png, screenshot-3.png,
> screenshot-4.png, screenshot-5.png
>
>
> This build
> [https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=53309&view=logs&j=ce3801ad-3bd5-5f06-d165-34d37e757d90&t=5e4d9387-1dcc-5885-a901-90469b7e6d2f&l=12264]
> fails as
> {noformat}
> Sep 18 02:26:15 02:26:15.743 [ERROR]
> org.apache.flink.table.client.cli.CliClientTest.testCancelExecutionInteractiveMode
> Time elapsed: 0.1 s <<< ERROR!
> Sep 18 02:26:15 java.lang.NullPointerException
> Sep 18 02:26:15 at
> org.apache.flink.table.client.cli.CliClient.closeTerminal(CliClient.java:284)
> Sep 18 02:26:15 at
> org.apache.flink.table.client.cli.CliClient.close(CliClient.java:108)
> Sep 18 02:26:15 at
> org.apache.flink.table.client.cli.CliClientTest.testCancelExecutionInteractiveMode(CliClientTest.java:314)
> Sep 18 02:26:15 at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method) {noformat}
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