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https://issues.apache.org/jira/browse/CASSANDRA-7236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-7236:
----------------------------------------
Reviewer: Brandon Williams
Assignee: Oleg Anastasyev
> Extend connection backlog for MessageService
> --------------------------------------------
>
> Key: CASSANDRA-7236
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7236
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Oleg Anastasyev
> Assignee: Oleg Anastasyev
> Attachments: BindBacklog500.txt
>
>
> On restart of a node, which is part of a large cluster (500+ nodes) a lot of
> connection timeouts occur and a lot of messages in kernel log like
> {code}
> kernel: TCP: Possible SYN flooding on port 7000. Sending cookies.
> and like
> kernel: net_ratelimit: 232 callbacks suppressed
> {code}
> found that MessageService use default backlog for its serversocket (which is
> 50 for java)
> This patch extends connection backlog to 500.
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