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From: Ado Dao <adodao@hotmail.de>
To: <users@directory.apache.org>
Subject: RE: How to close the LDAP client connection from ApacheDS
Date: Thu, 24 Feb 2011 16:32:27 +0000
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Hi=2C

thanks for the quick reply.=20


> Date: Thu=2C 24 Feb 2011 16:04:09 +0100
> From: elecharny@gmail.com
> To: users@directory.apache.org
> Subject: Re: How to close the LDAP client connection from ApacheDS
>=20
> On 2/24/11 3:24 PM=2C Ado Dao wrote:
> > Hi=2C
> >
> > we have found following exception in the log file. A ware any known pro=
blems.
> >
> >
> > NioSocketAcceptor-1 WARN util.DefaultExceptionMonitor| Unexpected excep=
tion.
> > java.io.IOException: Too many open files
> >          at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
> >          at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChann=
elImpl.java:145)
> >          at org.apache.mina.transport.socket.nio.NioSocketAcceptor.acce=
pt(NioSocketAcceptor.java:217)
> >          at org.apache.mina.transport.socket.nio.NioSocketAcceptor.acce=
pt(NioSocketAcceptor.java:48)
> >          at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acce=
ptor.processHandles(AbstractPollingIoAcceptor.java:481)
> >          at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acce=
ptor.run(AbstractPollingIoAcceptor.java:412)
> >          at org.apache.mina.util.NamePreservingRunnable.run(NamePreserv=
ingRunnable.java:64)
> >          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Thre=
adPoolExecutor.java:886)
> >          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPo=
olExecutor.java:908)
> >          at java.lang.Thread.run(Thread.java:662)
> >
> >
> > It looks like some ldap clients keep the connection to the apachds aliv=
e.
>=20
> Where are those log files coming from ? Which version of the application =
?


We use=20
the ApacheDS
  1.5.7 in an embedded version with
 a custom partition.=20
The log=20
files are from the log
 framework of ApacheDS.


>=20
> Also not that if you are on linux=2C the default number of handles you ca=
n=20
> open is 1000=2C which is far too low for a LDAP server=2C assuming you mi=
ght=20
> have ten of thousands opened connections. Tune your system.


I also agree you. But I
 suspect that the number of=20
open connections is steadily increasing=2C because
 the error occurred after several days. After a
 restart the ldap server it was OK.

It looks like some
 clients do not terminate
 the connection. Therefore=2C the
 question whether there is
 an option for the
 server=2C which terminates such
 open connections after a timeout.


--
Ado

=20
 		 	   		  =

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