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Posted to commits@cassandra.apache.org by "Paulo Motta (JIRA)" <ji...@apache.org> on 2016/05/20 16:39:12 UTC

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

Paulo Motta created CASSANDRA-11854:
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             Summary: Remove finished streaming connections from MessagingService
                 Key: CASSANDRA-11854
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11854
             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 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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