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https://issues.apache.org/jira/browse/CASSANDRA-16535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17368928#comment-17368928
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Brandon Williams commented on CASSANDRA-16535:
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Are you still intending to review, [~yukim]?
> Fail to init Cassandra Startup with an API connected with other cluster
> machines (3.11.9 version)
> -------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16535
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16535
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Startup and Shutdown
> Reporter: Aramis
> Assignee: Aramis
> Priority: Normal
> Fix For: 3.11.11
>
> Attachments: cassandra_modified.ps1,
> image-2021-03-24-21-12-32-709.png, image-2021-03-24-21-13-46-704.png
>
>
> The code in the function "VerifyPortsAreAvailable", look for the ports: 7000,
> 9042, 7199 and 9160 in the "netstat -an" command output.
>
> If we have an API connected to the cluster in a node, and we try to start the
> execution of cassandra (with that API working, accesing ports 9042 of the
> other cluster machines), the output of that command return us that the port
> is already in use, and Cassandra´s startup process fails, showing the output
> message : "port already in use" in the .log file.
> Thus, if we change the code of the function, adding the line: " -and $line
> -match "LISTENING" ", just next to the "$line -match "TCP" ", we will only
> interrupt the execution if the load port is in the state: "LISTENING", but no
> if it´s an active connection on the other node of the cluster.
> !image-2021-03-24-21-12-32-709.png|width=470,height=159!
> !image-2021-03-24-21-13-46-704.png|width=526,height=119!
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