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https://issues.apache.org/jira/browse/SSHD-417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14344612#comment-14344612
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Scott Goodhew commented on SSHD-417:
------------------------------------
After some further testing we don't seem to be able to reproduce it using the
code on master.
When is the next build likely to come out so we could test with that and
confirm?
> Memory leak in IoServiceListenerSupport.managedSessions when clients cut
> connections quickly
> --------------------------------------------------------------------------------------------
>
> Key: SSHD-417
> URL: https://issues.apache.org/jira/browse/SSHD-417
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Chris Szmajda
> Attachments: Screen Shot 2015-02-25 at 10.18.13 pm.png, Screen Shot
> 2015-02-25 at 10.18.36 pm.png, Screen Shot 2015-02-25 at 10.18.51 pm.png,
> Screen Shot 2015-02-25 at 10.19.04 pm.png, Screen Shot 2015-02-25 at 10.19.14
> pm.png, Screen Shot 2015-02-25 at 10.19.49 pm.png, Screen Shot 2015-02-26 at
> 5.19.21 pm.png, testing-stash-7105.zip
>
>
> Raised from https://jira.atlassian.com/browse/STASH-7105
> If you open and close a connection really fast it seems to hold onto lots of
> them in {{IoServiceListenerSupport}}
> In the wild this is sometimes caused by haproxy health checks.
> Can be reproduced running this python script
> {code}
> import socket
> import sys
> TCP_IP = '127.0.0.1'
> TCP_PORT = 7999
> def makeTestConnection():
> s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> s.connect((TCP_IP, TCP_PORT))
> s.close()
> numConnections = 10000
> if len(sys.argv) == 2:
> numConnections = int(sys.argv[1])
> for i in range(numConnections):
> print(str(i))
> makeTestConnection()
> {code}
> If you take a heap dump afterwards you will see lots of session objects.
> There seems to be a 2 minute auth timeout that gets hit and some of the
> sessions are removed but the majority are not removed.
> Creating 10000 connections in seems to result in around 7000 of them hanging
> around.
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