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From: <zapletal-martin@email.cz>
To: <api@directory.apache.org>
Subject: Fwd: Ldap persistent connection pool issues
Date: Thu, 16 Oct 2014 00:48:57 +0200 (CEST)
Message-Id: <Uo0.269Kv.2CB6yvIZOA8.1KFldP@seznam.cz>
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Hello,=0A=
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we are still having issues with the below.=0A=
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Any help on how to properly handle connection pool, what exceptions to loo=
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for and how to react to their occurence etc. to guarantee long life of the=
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connection would be very appreciated.=0A=
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Thank you=0A=
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---------- P=C5=AFvodn=C3=AD zpr=C3=A1va ----------=0A=
Od: zapletal-martin@email.cz=0A=
Komu: users@directory.apache.org=0A=
Datum: 13. 10. 2014 15:45:36=0A=
P=C5=99edm=C4=9Bt: Ldap persistent connection pool issues=0A=
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"=0A=
Hello,=0A=
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we are building a service using Apache Directory LDAP API. It should be a =
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long running service so it should manage the LDAP connection properly to =
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avoid disconnects or other issues after being up for a long time.=0A=
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The code we are using looks roughly like this=0A=
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Initialization:=0A=
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=C2=A0 =C2=A0 LdapConnectionConfig=C2=A0config =3D new LdapConnectionConfi=
g()=0A=
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=C2=A0 =C2=A0 config.setLdapHost(...)=0A=
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=C2=A0 =C2=A0 config.setLdapPort(...)=0A=
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=C2=A0 =C2=A0 config.setName(...)=0A=
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=C2=A0 =C2=A0 config.setCredentials(...)=0A=
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=C2=A0 =C2=A0 connectionPool =3D new LdapConnectionPool(new =0A=
PoolableLdapConnectionFactory(config))=0A=
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=C2=A0 =C2=A0 connectionPool.setTestOnBorrow(true)=0A=
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=C2=A0 =C2=A0 connectionPool.setTestOnReturn(true)=0A=
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On each request=0A=
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=C2=A0 =C2=A0 =C2=A0 LdapConnection connection =3D connectionPool.getConne=
ction()=0A=
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=C2=A0 =C2=A0 =C2=A0 connection.setTimeOut(...)=0A=
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=C2=A0 =C2=A0 =C2=A0 ... //Do search/add/delete/modify using the connectio=
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=C2=A0 =C2=A0 =C2=A0 connectionPool.releaseConnection(connection)=0A=
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We are currently trying to troubleshoot the service. Everything works fine=
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but after some time the service logs error similar to the below and stops =
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working. Restart of the service fixes the issue. Therefore we suspect the =
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long running nature of the service and we believe we may be using the =
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connection pool incorrectly (e.g. not releasing the connection correctly)=
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ERROR[ForkJoinPool-2-worker-3] PoolableLdapConnectionFactory - unable to =
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unbind connection: Cannot connect on the server, the connection is invalid=
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Unfortunately it is difficult to find documentation or examples of proper =
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usage of connection pool. Are we using it right or are we missing some ste=
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(e.g. bind, unbind, connect, reconnect after some time, ..?). Are there an=
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examples or documentation I could read to understand how to use the pool?=
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Any help appreciated,=0A=
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Thanks=0A=
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Martin=0A=
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"=0A=
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