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https://issues.apache.org/jira/browse/FLINK-21749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17301589#comment-17301589
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Chesnay Schepler commented on FLINK-21749:
------------------------------------------

Try port 0, to completely rule out port conflicts.

If the issue persists, please explicitly configure the network interface the 
blobserver should bind to via {{jobmanager.bind-host}}; maybe there is some 
network policy in place that rejects 0.0.0.0 .

> unable to use scala Shell
> -------------------------
>
>                 Key: FLINK-21749
>                 URL: https://issues.apache.org/jira/browse/FLINK-21749
>             Project: Flink
>          Issue Type: Bug
>          Components: Deployment / Kubernetes
>    Affects Versions: 1.12.0
>         Environment: Debian - kubernetes
>            Reporter: Bhagi
>            Priority: Critical
>             Fix For: 1.12.0
>
>         Attachments: image-2021-03-12-19-14-13-122.png, screenshot-1.png
>
>
> unable to access scala shell..observing exceptions in scala shell.
> I have attached the image. please look into this ASAP.



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