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From "Paulo Motta (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-11854) Remove finished streaming connections from MessagingService
Date Mon, 20 Jun 2016 15:36:05 GMT


Paulo Motta commented on CASSANDRA-11854:

Addressed nits, rebased and resubmitted tests.


Commit info: conflict from 2.1 to 2.2. 3.0 patch is slightly different and merges to trunk.

> Remove finished streaming connections from MessagingService
> -----------------------------------------------------------
>                 Key: CASSANDRA-11854
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Paulo Motta
>            Assignee: Paulo Motta
>         Attachments: oom.png
> When a new {{IncomingStreamingConnection}} is created, [we register it in the connections
of {{MessagingService}}, but we [only remove it if there is an exception|]
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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