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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9630) Killing cassandra process results in unclosed connections
Date Fri, 12 Jan 2018 13:22:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Stupp updated CASSANDRA-9630:
------------------------------------
    Status: Ready to Commit  (was: Patch Available)

> Killing cassandra process results in unclosed connections
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-9630
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9630
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Distributed Metadata, Streaming and Messaging
>            Reporter: Paulo Motta
>            Assignee: Paulo Motta
>            Priority: Minor
>             Fix For: 3.11.x
>
>         Attachments: apache-cassandra-3.0.8-SNAPSHOT.jar
>
>
> After upgrading from Cassandra from 2.0.12 to 2.0.15, whenever we killed a cassandra
process (with SIGTERM), some other nodes maintained a connection with the killed node in the
CLOSE_WAIT state on port 7000 for about 5-20 minutes.
> So, when we started the killed node again, other nodes could not establish a handshake
because of the connections on the CLOSE_WAIT state, so they remained on the DOWN state to
each other until the initial connection expired.
> The problem did not happen if I ran a nodetool disablegossip before killing the node.
> I was able to fix this issue by reverting the CASSANDRA-8336 commits (including CASSANDRA-9238).
After reverting this, cassandra now closes connection correctly when killed with -TERM, but
leaves connections on CLOSE_WAIT state if I run nodetool disablethrift before killing the
nodes.
> I did not try to reproduce the problem in a clean environment.



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