[jira] [Updated] (CASSANDRA-11854) Remove finished streaming connections from MessagingService

["Paulo Motta (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-11854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paulo Motta updated CASSANDRA-11854:
------------------------------------
    Component/s: Streaming and Messaging

> Remove finished streaming connections from MessagingService
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-11854
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11854
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>            Reporter: Paulo Motta
>            Assignee: Paulo Motta
>             Fix For: 2.1.15, 2.2.7, 3.0.8, 3.8
>
>         Attachments: oom.png
>
>
> When a new {{IncomingStreamingConnection}} is created, [we register it in the connections map|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/MessagingService.java#L1109] of {{MessagingService}}, but we [only remove it if there is an exception|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/IncomingStreamingConnection.java#L83] while attaching the socket to the stream session.
> On nodes with SSL and large number of vnodes, after many repair sessions these old connections can accumulate and cause OOM (heap dump attached).
> The connection should be removed from the connections map after if it's finished in order to be garbage collected.



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