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Posted to server-dev@james.apache.org by Norman Maurer <no...@apache.org> on 2010/03/27 14:23:12 UTC

Re: Re: [PROPOSAL] Replace MailRepository with Mailbox / MailboxManager for POP3Server ...

Hi Eric,

thx for the feedback . Does this happens with pop3 or imap ? Or with
both? What client you use?

About the OOM Exception, chances are good that this is fixed now. I
did something bad with ConsumerTemplate in RemoteDelivery nailet,
which could lead to such problems.

Bye
Norman

2010/3/27, Eric Charles <er...@u-mangate.com>:
> Great Norman,
>
> I just upgraded to the current trunk to benefit from :
> - JAMES-983: common POP3/IMAP MailRepository.
> - JAMES-984: activemq 5.3.1 hoping it will resolve some OutOfMemory
> exceptions I had (*)
>
> I deployed and now (configured with enableVirtualHosting=true and
> JDBCDomainList), I've got the following:
> - When my mailbox contains at least one mail, No problem: I can read it
> without any problem.
> - When my mailbox is empty, my mail client simply waits and finally give
> me a timeout (closing my client and launching it again with mails in the
> inbox, everything is fine again).
>
> Can anybody else reproduce it?
> Is there additional specific configuration I have to apply ?
>
> Tks a lot,
>
> Eric
>
>
> (*) Just for information, about the OutOfMemory I had with activemq 3.5.0:
> - Testing different configurations from
> http://activemq.apache.org/javalangoutofmemory.html didn't help.
> - Stressing a local deployment with apache-sever-postage, server was
> holding the pressure during hours, however, memory was slightly but
> constantly growing.
> - I have a heap dump to be analyzed (still todo)
> - Reading 6 memory leak bugs resolved in activemq 3.5.1.
> (https://issues.apache.org/activemq/secure/ReleaseNote.jspa?projectId=10520&styleName=Html&version=12183),
> I decided to try to migrate to activemq 5.3.1, and by chance, Norman
> checked it in two days ago. I still have to wait a few days to see if
> the OutOfMemory problem is resolved.
>
>
>
> On 12/23/-28158 08:59 PM, Norman Maurer wrote:
>> Ok it seems like this works for everyone so far.. I will commit it
>> this weekend ..
>>
>> Thanks again for all the feedback / questions.
>>
>> Bye,
>> Norman
>>
>>
>> 2010/3/26 Stefano Bagnara<ap...@bago.org>:
>>
>>> 2010/3/24 Norman Maurer<no...@apache.org>:
>>>
>>>> Hi all,
>>>>
>>>> I want to propose some really heavy change in current JAMES trunk, and
>>>> so next version. As all of you knows we are supporting IMAP in current
>>>> development version, which ships with its own mail store backend
>>>> called MailboxManager / Mailbox. For POP3 we use MailRepository as
>>>> backend.
>>>> I think this is a no go for a number of reasons, but the major one is
>>>> that we should be able to switch between IMAP and POP3 without the
>>>> need to migrate mails. So I rewrote the POP3Server to re-use the
>>>> MailboxManager / Mailbox stuff which is used by IMAP.
>>>>
>>> I think this is a good think. I also hope MailboxManager/Mailbox API
>>> can be improved and simplified, but using a single API is the only way
>>> to go. Once we use only one we'll better understand how to improve it.
>>>
>>>
>>>> So if a user login via POP3 he will just see the folder called INBOX
>>>> and nothing else. With IMAP he will see all folders. Thats exactly
>>>> what dovecot and courier does ( both heavy used unix imap/pop3
>>>> servers).
>>>>
>>> A good extension would be to have a "login pattern" to read custom
>>> folders..
>>> e.g: I login as "username#FOLDER" with username password and this way
>>> I get access to FOLDER instead of INBOX.
>>> The same could be applied to the delete behaviour (something like the
>>> "recent:" prefix hack in gmail).
>>>
>>>
>>>> Another advance is that we elimate one more dependency on storing
>>>> mails via javamail, which is not the way to go for the future ...
>>>> On the downside we will break backward-compatibility with every James
>>>> release we did before. So we will need to write a "migration" tool,
>>>> but this should not be to hard.
>>>>
>>> IMO at this point we should plainly ignore backward compatibility.
>>> AFTER we'll have a working release we'll define a migration path (with
>>> the help of users wanting to upgrade).
>>>
>>>
>>>> Because the change is so heavy, I dedicited to attach it to JIRA  for
>>>> review and not commit it directly.
>>>>
>>>> You can find it here:
>>>> https://issues.apache.org/jira/browse/JAMES-983
>>>>
>>>> So what do you think ?
>>>>
>>> +1
>>>
>>> Stefano
>>>
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>>>
>>
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>>
>>
>
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Re: [PROPOSAL] Replace MailRepository with Mailbox / MailboxManager for POP3Server ...

Posted by Norman Maurer <no...@googlemail.com>.

Hi Eric,

just post the infos when you have them, and I will look what I can do..

Bye,
Norman


2010/3/29 Eric Charles <er...@u-mangate.com>:
> Hi Norman,
>
> With wireshark, thunderbird/james hangs at POP3 STAT command.
> I saw you patched the StatCmdHandler. It now works even without any message
> in my mailbox (after update/package/deploy).
> Great!
>
> However:
> - I received a few exceptions complaining about the transaction (can not
> initiate a new one while still an active) while retrieving messages and the
> spool was doing some work.
> - I saw yesterday some strange behaviour when I made tests with different
> clients : deleted messages were still fetched by new clients.
>
> I will further investigate to post with more consolidated info.
>
> Many tks,
>
> Eric
>
>
> On 03/29/2010 08:53 AM, Norman Maurer wrote:
>>
>> Hi Eric, I was able to reproduce your problem and just checked in the
>> fix. Please svn up and try again..
>>
>> Thx for your feedback.
>>
>> Bye,
>> Norman
>>
>>
>> 2010/3/29 Norman Maurer<no...@apache.org>:
>>
>>>
>>> Hi Eric,
>>>
>>> I just tried to acces an empty inbox via thunderbird (pop3) here. It
>>> worked without any probs.
>>>
>>> Im using windows 7 and thunderbird 3.0.3
>>>
>>> Bye,
>>> Norman
>>>
>>>
>>> 2010/3/28 Norman Maurer<no...@apache.org>:
>>>
>>>>
>>>> ---------- Forwarded message ----------
>>>> From: Norman Maurer<no...@apache.org>
>>>> Date: 2010/3/28
>>>> Subject: Re: [PROPOSAL] Replace MailRepository with Mailbox /
>>>> MailboxManager for POP3Server ...
>>>> To: Eric Charles<er...@u-mangate.com>
>>>>
>>>>
>>>> Hi Eric,
>>>>
>>>> could you maybe use wireshark or something similar to log what
>>>> thunderbird tries todo exactly.. ?
>>>>
>>>> Thx,
>>>> Norman
>>>>
>>>>
>>>> 2010/3/28 Eric Charles<er...@u-mangate.com>:
>>>>
>>>>>
>>>>> Hi Norman,
>>>>>
>>>>> I just made the following tests:
>>>>>
>>>>> - Fresh checkout from trunk and mvn package (some new dependencies were
>>>>> downloaded such as jsieve, mailet-sdk,...) =>  same problem on a local
>>>>> deployment with thunderbird : it hangs when mailbox is empty.
>>>>>
>>>>> - I after defined my production account on evolution
>>>>> (http://www.gnome.org/projects/evolution) : I didn't have the problem
>>>>> anymore, but really strange, evolution downloaded some messages from
>>>>> yesterday. Those messages had been deleted from my inbox via
>>>>> thunderbird,
>>>>> but was retrieved via evolution...
>>>>>
>>>>> - I tested with evolution the local deployment I just made : I can read
>>>>> the
>>>>> inbox even if empty.
>>>>>
>>>>> The problem seems to reside on the thunderbird/james conversation when
>>>>> inbox
>>>>> is empty.
>>>>>
>>>>> Tks,
>>>>> Eric
>>>>>
>>>>>
>>>>> On 03/27/2010 10:08 PM, Norman Maurer wrote:
>>>>>
>>>>>>
>>>>>> Hi Eric,
>>>>>>
>>>>>> I just tested pop3 with imail and no messages in inbox and everything
>>>>>> "just works". Will try to test it with thunderbird later..
>>>>>>
>>>>>> Bye,
>>>>>> Norman
>>>>>>
>>>>>>
>>>>>> 2010/3/27 Norman Maurer<no...@apache.org>:
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> Hi Eric,
>>>>>>>
>>>>>>> I will try to find out whats wrong with the pop3 inbox stuff. If you
>>>>>>> find out anything else please feel free to just report it..
>>>>>>>
>>>>>>> Thx,
>>>>>>> Norman
>>>>>>>
>>>>>>> 2010/3/27 Eric Charles<er...@u-mangate.com>:
>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>> Hi Norman,
>>>>>>>>
>>>>>>>> Many tks for your quick answer.
>>>>>>>>
>>>>>>>> I had defined in my Thunderbird 3.0.3 client (on linux) the pop3
>>>>>>>> account
>>>>>>>> as
>>>>>>>> the default one.
>>>>>>>> When launching thunderbird, the connection was succefully done "Host
>>>>>>>> contacted, sending login information", saying after 1 second
>>>>>>>> "Determining
>>>>>>>> which messages to index" (never saw that message before...), hanging
>>>>>>>> there a
>>>>>>>> few minutes, and finally saying "connection to server ... timed
>>>>>>>> out".
>>>>>>>> After
>>>>>>>> that, Imap account behaved also such a way...
>>>>>>>> I also tried with latest Thundrebird 3.0.3: same result...
>>>>>>>>
>>>>>>>> I have now defined the imap account as the default one, and it's
>>>>>>>> working
>>>>>>>> fine even without any mail in the inbox.
>>>>>>>> However, for the pop3 account, I still have the same behaviour.
>>>>>>>>  Anyway,
>>>>>>>> I
>>>>>>>>
>>
>>
>>
>
>
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