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https://issues.apache.org/jira/browse/CASSANDRA-14351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17771496#comment-17771496
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Brandon Williams commented on CASSANDRA-14351:
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I don't think we should couple this to Sigar since we are considering removing
it in CASSANDRA-18775.
> Support systemd SD_NOTIFY interface during startup
> --------------------------------------------------
>
> Key: CASSANDRA-14351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14351
> Project: Cassandra
> Issue Type: Improvement
> Components: Packaging
> Reporter: Thomas Bechtold
> Assignee: Stefan Miklosovic
> Priority: Normal
> Fix For: 4.0.x, 4.1.x, 5.0.x, 5.x
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> When cassandra is started via systemd, it would be nice to support the
> [SD_NOTIFY|https://www.freedesktop.org/software/systemd/man/sd_notify.html]
> protocol so systemd know, when cassandra is ready (that can be use for
> dependencies or when you need to wait until cassandra startup is done).
> A very simple implementation could be done using the
> {code:java}
> systemd-notify --ready
> {code}
> command line tool (and ignore it if the tool is not there)
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