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https://issues.apache.org/jira/browse/CASSANDRA-20673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Semb Wever updated CASSANDRA-20673:
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Status: Ready to Commit (was: Review In Progress)
> CCM not killing remaining nodes if lower index nodes fail to start
> ------------------------------------------------------------------
>
> Key: CASSANDRA-20673
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20673
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Tool/CCM
> Reporter: Ariel Weisberg
> Assignee: Ariel Weisberg
> Priority: Normal
> Attachments: ci_summary_ccm_aweisberg_20673_242.html,
> results_details_ccm_aweisberg_20673_242.tar.xz
>
>
> It starts them all in a loop without checking what their PID is from the PID
> file and then loops checking to see if each one is running. If a node kills
> itself then CCM skips straight to stopping all the nodes without having read
> their PID files.
> The simplest fix to get started is first is loop over all the nodes waiting
> for them to start up before checking if they have the log message saying they
> are listening for CQL connections. Right now it both waits for the startup
> (which populates the PID field in Node) and then waits for the log message
> which can fail causing the PID field not to get populated.
> The entire state management is here is very fragile and really a better way
> to do this would be to tag the command lines and then just `pkill -9 -f` so
> you don't have to search for the PID at all. There is a lot of conditions and
> setting things to `None` and only doing things if in a certain state and when
> it comes to just making sure something is stopped it's not necessary.
> Really you could say that the log directory serves as a unique identifier for
> the node. Technically it is not a unique identifier for the process, but it
> would serve as that in most cases if you never started duplicated processes
> so maybe close enough.
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