Re: [ZODB-Dev] Calculating Physical Object Size

2006-08-09 Thread Marius Gedminas
floating around that does something like that. analyze.py by Matt Kromer. I think I got it from this list, or maybe it comes with Zope 2. Or both ;) Marius Gedminas -- ... one of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful

Re: [ZODB-Dev] Threads, ZODB, and how to install ZODB without distutils

2007-02-13 Thread Marius Gedminas
with distutils may cause conflicts with the Zope instances. Am I right? If so, then how should I install ZODB side-by-side the consumer-producer application? This sounds like a job for zc.buildout. Marius Gedminas -- Special bonus feature: absolutely nowhere in RetchMail's code

Re: [ZODB-Dev] Making use of the zodb transaction framework outside of zodb?

2007-02-14 Thread Marius Gedminas
On Wed, Feb 14, 2007 at 10:57:27PM +0200, Marius Gedminas wrote: On Tue, Feb 13, 2007 at 06:27:57PM -, Petra Chong wrote: In the docs I have read that it is possible for non-zodb apps to plug into the transaction framework. However, I am unable to find any specifics as to how to do

Re: [ZODB-Dev] Error starting simplest ZEO instance

2007-08-12 Thread Marius Gedminas
, and figured out that it's actually running: /usr/bin/python /usr/bin/zdrun.py -S schema.xml -b 10 -s zdsock -u www -x 0,2 runzeo.py -a -f Data.fs -t 10 -m 18 I'd be inclined to look for invisible control characters such as CR at the end of that line. Marius Gedminas -- The moral

Re: [ZODB-Dev] Writing Persistent Class

2008-01-18 Thread Marius Gedminas
) ConnectionStateError: Shouldn't load state for 0x01 when the connection is closed It seems that you're keeping a reference to a persistent object after you close the ZODB connection. Don't do that. Marius Gedminas -- If Linux doesn't have the solution, you have the wrong problem. signature.asc

Re: [ZODB-Dev] PGStorage

2008-01-22 Thread Marius Gedminas
can dig into object history from a debugzope console and figure what changed it and when. Or restore deleted data, for that matter. Marius Gedminas -- MSDOS didn't get as bad as it is overnight -- it took over ten years of careful development. -- [EMAIL PROTECTED] signature.asc

Re: [ZODB-Dev] Writing Persistent Class

2008-01-23 Thread Marius Gedminas
On Mon, Jan 21, 2008 at 07:15:42PM +0100, Dieter Maurer wrote: Marius Gedminas wrote at 2008-1-21 00:08 +0200: Personally, I'd be afraid to use deepcopy on a persistent object. A deepcopy is likely to be no copy at all. As Python's deepcopy does not know about object ids, it is likely

Re: [ZODB-Dev] Mutating class of an instance

2008-07-02 Thread Marius Gedminas
stored properly in the pickle (which I would expect). The class is also stored in every reference to that object. Any chance I can get zeo to tell the other clients about the new class? Marius Gedminas -- It's my understanding that although in principle TCP can handle huge throughputs

Re: [ZODB-Dev] Locking

2008-07-03 Thread Marius Gedminas
key. Usually you shouldn't need to do this. ZODB will detect conflicting write transactions and raise ConflictError that you're supposed to catch and retry up to a certain reasonable number of times (3 or 5). Marius Gedminas -- Key emulation: [ ] Intuitive [*] Emacs(Seen in an MCEdit

Re: [ZODB-Dev] Mutating class of an instance

2008-07-03 Thread Marius Gedminas
(Adding zodb-dev@zope.org back to Cc:) On Thu, Jul 03, 2008 at 09:14:27AM -0400, Erik Dahl wrote: On Jul 2, 2008, at 10:55 AM, Marius Gedminas wrote: inst.__class__ = NewClass Is inst a persistent object? Then your only chance to get this to work is to find *all* objects

Re: [ZODB-Dev] ZODB design. Size and saving records

2008-07-03 Thread Marius Gedminas
to know and get this fixed before my wife divorces me! She spends time entering books and we still seem to not really know when the changes are going to permanently be saved. Ouch. Marius Gedminas -- Nothing ever goes missing that they don't look at me, ever since that time I lost my horse

Re: [ZODB-Dev] Persistent class in python

2008-07-20 Thread Marius Gedminas
to create weakreferences to this class (in PickleCache). Also this class must not have __slots__ (__getstate__ method). Marius Gedminas -- C gives you enough rope to hang yourself. C++ also gives you the tree object to tie it to. signature.asc Description: Digital signature

Re: [ZODB-Dev] ZODB fails on test

2008-08-03 Thread Marius Gedminas
. Or you could switch to Python 2.3 or 2.4. Trying to use 3-year-old software (ZODB 3.4.2) in an unsupported configuration (Python 2.5) may have downsides. Marius Gedminas -- Anything can be made to work if you fiddle with it long enough. signature.asc Description: Digital signature

Re: [ZODB-Dev] Very large amounts of output from fsrefs.py

2008-08-27 Thread Marius Gedminas
makes me suspect you may be seeing that bug. Running fsrefs.py on Data.fs gives 1507079 instances of refers to invalid objects. This might indicate a problem, I would guess. This is beyond my expertise. I'd be worried too. Marius Gedminas -- Just a note: quantum gravity discussions are _clearly_

Re: [ZODB-Dev] Broken instances after refactoring in ZODB

2008-10-03 Thread Marius Gedminas
to all the classes using their new locations. or do I have to return to putting all my .py files in one directory. Third alternative: create modules for backwards compatibility (just the step 1 described above). Marius Gedminas -- Those who can't write, write manuals. signature.asc

Re: [ZODB-Dev] 3.8.1

2008-10-10 Thread Marius Gedminas
projects will be to try to address this problem. Speaking of temporary files, running the tests leaves over a 100 new temporary files and directories in /tmp every night. I had to create a cron script to clean them up to avoid completely filling up the disk. Marius Gedminas -- When we say we want

Re: [ZODB-Dev] 3.8.1

2008-10-12 Thread Marius Gedminas
On Fri, Oct 10, 2008 at 10:43:57AM -0700, Marius Gedminas wrote: In the mean time I updated the buildbot config to run the tests separately. I don't know offhand if buildbot 0.7.4 supports the interlocks documented in 0.7.9's documentation[1], so I just created a new scheduler that runs

Re: [ZODB-Dev] problem with broken

2008-11-05 Thread Marius Gedminas
that you don't get an exception when loading an object that refers to a broken object. Or do I misunderstand that broken is a sort of proxy for the missing class that allows it to be around? Yes, but being around is a rather narrow goal that doesn't allow you to do anything with it. Marius

Re: [ZODB-Dev] problem with broken

2008-11-06 Thread Marius Gedminas
On Wed, Nov 05, 2008 at 03:59:07PM +0100, Christian Theune wrote: On Wed, 2008-11-05 at 16:00 +0200, Marius Gedminas wrote: On Wed, Nov 05, 2008 at 11:48:35AM +0100, Christian Theune wrote: On Wed, 2008-11-05 at 11:31 +0100, Laurence Rowe wrote: Broken objects occur when the class

Re: [ZODB-Dev] svn.zope.org up again?

2008-11-11 Thread Marius Gedminas
with older revisions seem to work. I've a full svn mirror up to rev 92837 if it turns out to be needed. Marius Gedminas -- IBM motto: If you can't read our assembly language, you must be borderline dyslexic, and we don't want you to mess with it anyway -- Linus Torvalds

Re: [ZODB-Dev] Estrange behaviour with BTreeFolder2

2009-04-01 Thread Marius Gedminas
classes weren't subclasses of Persistent (and the fix would be: make them subclass Persistent). Marius Gedminas -- I used to (somewhat) sneer at people who describe themselves thus: I program HTML. Then I tried to make a web-site look as I wanted it to (ie. not grotesquely ugly), wow - perhaps

Re: [ZODB-Dev] URGENT: ZODB down - Important Software Application at CERN

2009-05-25 Thread Marius Gedminas
previous backups with repozo raises a CRC Error. Has anyone ever experienced this? Any clues on how to solve this problem? We'd really appreciate you could help us out, since this is becoming a big issue here at CERN (a lot of people's work depends on this). Good luck! Marius Gedminas -- Linux

Re: [ZODB-Dev] URGENT: ZODB down - Important Software Application at CERN

2009-05-26 Thread Marius Gedminas
persistent objects. Marius Gedminas -- The only way to learn a new programming language is by writing programs in it. -- Brian Kernighan signature.asc Description: Digital signature ___ For more information about ZODB, see the ZODB Wiki

Re: [ZODB-Dev] URGENT: ZODB down - Important Software Application at CERN

2009-05-26 Thread Marius Gedminas
and docstrings, and some jumping around following the flow of functions. Marius Gedminas -- I read I forget; I see I remember; I teach I understand. signature.asc Description: Digital signature ___ For more information about ZODB, see the ZODB Wiki: http

Re: [ZODB-Dev] URGENT: ZODB down - Important Software Application at CERN

2009-05-27 Thread Marius Gedminas
and then that instance is updated with the values from the pickle. Marius Gedminas -- Every nonempty totally-disconnected perfect compact metric space is homeomorphic to the Cantor set. signature.asc Description: Digital signature ___ For more

Re: [ZODB-Dev] URGENT: ZODB down - Important Software Application at CERN

2009-05-27 Thread Marius Gedminas
On Wed, May 27, 2009 at 03:35:26PM +0200, Hanno Schlichting wrote: Marius Gedminas wrote: On Wed, May 27, 2009 at 12:17:36PM +0200, Hanno Schlichting wrote: Chris Withers wrote: Hanno Schlichting wrote: They are incredibly expensive to unpickle since all the DWIM magic in their __init__

Re: [ZODB-Dev] Data.fs size grows non-stop

2009-12-08 Thread Marius Gedminas
). the z3c.zoodbbrowser can open a ZODB with a pythin GUI. There you can iterate over each objects in the ZODB. You will probably see more then you see in the UI, especialy if some objects get created which you don't expect. Marius Gedminas -- There's a special hell 4 people who replace words with numbers

Re: [ZODB-Dev] Data.fs size grows non-stop

2009-12-09 Thread Marius Gedminas
better space efficiency by redesigning the data structure. Marius Gedminas -- Dijkstra probably hates me -- Linus Torvalds, in kernel/sched.c signature.asc Description: Digital signature ___ For more information about ZODB, see the ZODB

Re: [ZODB-Dev] Data.fs size grows non-stop

2009-12-09 Thread Marius Gedminas
On Wed, Dec 09, 2009 at 06:09:36PM +0200, Marius Gedminas wrote: On Wed, Dec 09, 2009 at 02:42:58PM +0100, Pedro Ferreira wrote: Hello, Just zodbbrowser with no prefix: http://pypi.python.org/pypi/zodbbrowser https://launchpad.net/zodbbrowser It's a web-app: it can connect

Re: [ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10 Thread Marius Gedminas
On Wed, Dec 09, 2009 at 01:04:03PM -0500, Jim Fulton wrote: On Wed, Dec 9, 2009 at 12:06 PM, Marius Gedminas mar...@gedmin.as wrote: ... (Supporting both ZODB 3.8 and 3.9 is kinda tricky, but with some very ugly hacks I managed.) This sounds like something that needs to be fixed. Can you

Re: [ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10 Thread Marius Gedminas
On Thu, Dec 10, 2009 at 11:08:25AM +, Chris Withers wrote: Marius Gedminas wrote: * In ZODB 3.8, the 'version' argument of ClientStorage.history (as well as other kinds of storages, I suppose) is mandatory. In ZODB 3.9 it's gone. Solved by peeking into the method

Re: [ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10 Thread Marius Gedminas
On Thu, Dec 10, 2009 at 10:08:36AM -0500, Jim Fulton wrote: On Thu, Dec 10, 2009 at 5:58 AM, Marius Gedminas mar...@gedmin.as wrote: On Wed, Dec 09, 2009 at 01:04:03PM -0500, Jim Fulton wrote: On Wed, Dec 9, 2009 at 12:06 PM, Marius Gedminas mar...@gedmin.as wrote: ... (Supporting both

Re: [ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10 Thread Marius Gedminas
On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote: On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas mar...@gedmin.as wrote: ... Well, there is IStorage, and I think all storages (except for FileStorage) implemented it faithfully I guess that depends on what you mean

Re: [ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

2009-12-10 Thread Marius Gedminas
On Thu, Dec 10, 2009 at 02:07:06PM -0500, Jim Fulton wrote: On Thu, Dec 10, 2009 at 1:50 PM, Marius Gedminas mar...@gedmin.as wrote: On Thu, Dec 10, 2009 at 12:41:11PM -0500, Jim Fulton wrote: On Thu, Dec 10, 2009 at 11:54 AM, Marius Gedminas mar...@gedmin.as wrote: In 3.9 for FileStorage

[ZODB-Dev] Locating backrefs of persistent objects

2009-12-17 Thread Marius Gedminas
? zc.zodbgc? Bits and pieces of ZODB itself? The wishlist bug for this feature is here: https://bugs.launchpad.net/zodbbrowser/+bug/497758 Marius Gedminas -- Linux don't need no steenkin' viruses. The users can destroy the system all by themselves -- Peter Dalgaard

Re: [ZODB-Dev] Undo alternatives

2009-12-28 Thread Marius Gedminas
this for Zope 3. Marius Gedminas -- System going down at 5 this afternoon to install scheduler bug. signature.asc Description: Digital signature ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list

Re: [ZODB-Dev] Persistent object has empty __dict__ for a little while

2010-01-07 Thread Marius Gedminas
.__setstate__(field.__getstate__()) Alternatively, you can assure that field is acticated first, using _p_activate or by accessing an attribute. Regards, Marius Gedminas -- Those of you thinking that grown men with serious jobs should be above such phrases as way friendlier should realise

Re: [ZODB-Dev] free space for FileStorage, and possible issues with repozo (was: Missing Content)

2010-01-30 Thread Marius Gedminas
/$fd /new/path (sadly, ln doesn't seem to work -- Invalid cross-device link -- so you need twice as much disk space) Marius Gedminas -- Only great masters of style can succeed in being obtuse. -- Oscar Wilde Most UNIX programmers are great masters of style

Re: [ZODB-Dev] Understanding the ZODB cache-size option

2010-03-23 Thread Marius Gedminas
'zope.session.session.SessionPkgData' 1 class 'schooltool.course.section.SectionContainer' 1 class 'zope.intid.IntIds' Marius Gedminas -- Did you know that 7/5 people don't know how to use fractions? signature.asc Description: Digital signature

Re: [ZODB-Dev] DemoStorage stacking in zope.testing layers

2010-04-05 Thread Marius Gedminas
the same DB object (which would make the tests easier to write in this case) and simply tell it to use the top of the stack at all times? IMHO it's easier to find a way to pass the current database to the tests than to make the database switch storages on the fly. Marius Gedminas -- Never

Re: [ZODB-Dev] Change in a mutable object(list) not being recognized by ZODB

2010-04-24 Thread Marius Gedminas
is a function which adds a player and returns PlayerRoot and CountRoot findplayerbyname returns a player object every club object has an attribte Players which is a list. Marius Gedminas -- No proper program contains an indication which as an operator-applied occurrence identifies an operator

Re: [ZODB-Dev] tracking back to what code caused a conflicting object change

2010-07-28 Thread Marius Gedminas
can I find out what code is actually touch this and so causing this CW conflict? Marius Gedminas -- 1 4m 5o 3l337! just got r00t on this a href=127.0.0.1k3wl site/a j00 sux0r5! signature.asc Description: Digital signature ___ For more information about

Re: [ZODB-Dev] Issue trying to remove elements in OOTreeSet

2010-09-23 Thread Marius Gedminas
when the objects are loaded back from the ZODB and end up at a different memory address. The default comparison provided by Python doesn't cut it. So: does your Chatroom define __cmp__ or __lt__, __le__, __gt__, __ge__, __eq__, __ne__ methods? Marius Gedminas -- Writing setattr hooks properly

Re: [ZODB-Dev] RFC: deprecate transaction user and description fields in favor of extened info and simplify extended info API

2010-09-23 Thread Marius Gedminas
On Thu, Sep 23, 2010 at 10:53:03AM -0400, Stephan Richter wrote: On Thursday, September 23, 2010, Jim Fulton wrote: Comments? Sounds good and addresses my concerns raised in the discussion of the bug. What bug? Marius Gedminas -- Being really good at C++ is like being really good at using

Re: [ZODB-Dev] Issue trying to remove elements in OOTreeSet

2010-09-24 Thread Marius Gedminas
implementation. Dump it using items() and add it one-by-one to an empty OOTreeSet to recover. Marius Gedminas -- Anybody who doesn't cut his speed at the sight of a police car is probably parked. signature.asc Description: Digital signature

Re: [ZODB-Dev] Issue trying to remove elements in OOTreeSet

2010-09-24 Thread Marius Gedminas
# define __le__, __gt__, __ge__ in a similar way to persistent.Persistent? Marius Gedminas -- The old political syllogism something must be done: this is something: therefore this will be done appears to be at work here, in spades. signature.asc Description: Digital signature

Re: [ZODB-Dev] Default comparison considered harmful in BTrees.

2010-10-25 Thread Marius Gedminas
, and have the extra protection once they've fixed any issues? Or perhaps make it emit DeprecationWarnings, but continue working. Then make it a fatal error in the next minor/major release. Marius Gedminas -- Include me out. signature.asc Description: Digital signature

Re: [ZODB-Dev] RelStorage: getting keep-history wrong results in silent death

2010-11-04 Thread Marius Gedminas
the child process, which resulted in this kind of child keeps restarting, sysadmin has no clue why if an exception happens during startup. Make sure your zdaemon.conf has runner ... transcript $LOGDIR/transcript.log ... /runner or something like that. Marius Gedminas

Re: [ZODB-Dev] 32-bit vs 64-bit

2010-11-18 Thread Marius Gedminas
noticeable difference -- other than the obvious memory growth -- is that string hashes are computed differently, which changes the ordering of dict.keys(). Thankfully, pickles do not rely on that implementation detail. Marius Gedminas -- It's possible to describe anything in mathematical notation

Re: [ZODB-Dev] TypeError: ('object.__new__(SyncedLanguages) is not safe, use Persistence.Persistent.__new__()', ...

2010-12-30 Thread Marius Gedminas
up a __new__ method to always return the same instance, so you can unregister it cleanly before removing the code. This will not work if you have more than one instance in the DB. Fixing up _subscribers directly is also a possible workaround, if you're feeling brave. Marius Gedminas -- /* Intel

Re: [ZODB-Dev] TypeError: ('object.__new__(SyncedLanguages) is not safe, use Persistence.Persistent.__new__()', ...

2010-12-31 Thread Marius Gedminas
On Fri, Dec 31, 2010 at 08:39:22AM +0100, Godefroid Chapelle wrote: Le 31/12/10 04:08, Marius Gedminas a écrit : On Fri, Dec 31, 2010 at 02:02:36AM +0100, Godefroid Chapelle wrote: I have been fighting all day to understand a bug with the unregistration of a utility from a local site

Re: [ZODB-Dev] I would like to know if api exists nowadays to get list of all objects which where modified in a transaction ?

2011-07-29 Thread Marius Gedminas
of this. Marius Gedminas -- It also makes sense in the case of 1872, where most of Horace Greenly's electors came to the sensible conclusion that the death of their candidate made him unfit for office. -- matthewwdaly explains the workings of the US Electoral College signature.asc Description: Digital

[ZODB-Dev] A couple of repozo buglets

2011-12-06 Thread Marius Gedminas
, this email is probably more descriptive than the README.txt. Marius Gedminas -- The clothes have no emperor. -- C.A.R. Hoare, commenting on ADA. signature.asc Description: Digital signature ___ For more information about ZODB, see http

Re: [ZODB-Dev] A couple of repozo buglets

2011-12-18 Thread Marius Gedminas
On Wed, Dec 07, 2011 at 03:00:10AM +0200, Marius Gedminas wrote: With complimentary automated functional test cases and a README at https://github.com/mgedmin/repozo-testcases Bug #1: insufficient error detection. You can truncate a *.deltafs in the middle, and repozo -R doesn't notice

Re: [ZODB-Dev] where does 32it vs 64bit matter?

2012-01-03 Thread Marius Gedminas
- no. With FileStorage - yes. No issues after moving a few Data.fs'es from 32-bit to 64-bit Linux machines. Marius Gedminas -- Special bonus feature: absolutely nowhere in RetchMail's code is there an arbitrary 3-second sleep(). Wow! What other mail retriever can say that? (Hint: not fetchmail

Re: [ZODB-Dev] zeopack error

2012-02-08 Thread Marius Gedminas
assume objects are garbage when it shouldn't). Packing with GC disabled ought to be safe. Marius Gedminas -- The world is really obsessing over the UI preferences of the person who gave us git? -- Matthew Garrett signature.asc Description: Digital signature

Re: [ZODB-Dev] zeopack error

2012-02-08 Thread Marius Gedminas
On Thu, Feb 09, 2012 at 01:25:48AM +0200, Marius Gedminas wrote: On Wed, Feb 08, 2012 at 01:24:55PM +0100, Kaweh Kazemi wrote: Recap: last week I examined problems I had packing our 4GB users storage. ... unp = pickle.Unpickler(f) unp.persistent_load = lambda oid: 'persistent

Re: [ZODB-Dev] zeopack error

2012-02-09 Thread Marius Gedminas
correctly when it checks for reachability? I would hope so, but I don't really know. It would only work if you're packing all the storages together, presumably. Marius Gedminas -- Well, there's a quantum computer that can factor 15, so those of you using 4-bit RSA should worry. -- Bruce

Re: [ZODB-Dev] How to update an object in a multithreading application?

2012-03-19 Thread Marius Gedminas
uncommitted changes you want to keep). print root['counter'] =, root['counter'] Marius Gedminas -- This is, or so I'm told, a classic book. I can see why. It is long and it requires a great effort to finish it. If you go through a great effort to suffer for a long time, you are allowed to sneer

Re: [ZODB-Dev] ZODB via Pipe/Socket

2012-03-20 Thread Marius Gedminas
db.open() to get a connection. If you have multiple *processes* rather than threads, use ZEO. ZEO works fine over Unix domain sockets (this is, in fact, my preferred method of deployment). Marius Gedminas -- There is a 70% probability of tomorrow. (Actual weatherman quote, 1988) signature.asc

Re: [ZODB-Dev] database conflict fail

2012-03-22 Thread Marius Gedminas
): -- 125 tree = self._data.get(key[:6], default) 126 if tree is default: 127 return default TypeError: 'int' object is unsubscriptable This makes more sense than the EOF error above. Marius Gedminas -- I am monolingual and English is the ling I mono

Re: [ZODB-Dev] database conflict fail

2012-03-22 Thread Marius Gedminas
On Thu, Mar 22, 2012 at 11:07:09PM +0200, Marius Gedminas wrote: On Thu, Mar 22, 2012 at 04:13:34PM -0400, Claudiu Saftoiu wrote: Ok, I just got a ConflictError: ConflictError: database conflict error (oid 0x139c35, class BTrees.OOBTree.OOBucket, serial this txn started

Re: [ZODB-Dev] transaction Attempts class

2012-03-29 Thread Marius Gedminas
() liberally only after I was able to see the notes in ZODBBrowser (and became annoyed by transactions that didn't have notes). That reminds me, I need to patch ZODBBrowser to show extended info (such as the request type and URL). Marius Gedminas -- Shift happens. -- Doppler

Re: [ZODB-Dev] Error installing ZODB (transaction 1.2.0)

2012-03-29 Thread Marius Gedminas
-packages does not scale.) Buildout is much more capable, but has a somewhat steeper learning curve. Marius Gedminas -- If you are angry with someone, you should walk a mile in their shoes... then you'll be a mile away from them, and you'll have their shoes. signature.asc Description: Digital

Re: [ZODB-Dev] server stops handling requests - nowhere near 100% CPU or Memory used

2012-04-20 Thread Marius Gedminas
a list of options. You could also put nginx in front, to take care of ill-behaved HTTP clients. Marius Gedminas -- Never be afraid to tell the world who you are. -- Anonymous signature.asc Description: Digital signature ___ For more

Re: [ZODB-Dev] how to get root obj from a new transaction?

2012-05-02 Thread Marius Gedminas
that you may need to implement some kind of retry logic if commit() raises a ConflictError due to conflicting updates. Marius Gedminas -- main(k){float i,j,r,x,y=-16;while(puts(),y++15)for(x =0;x++84;putchar( .:-;!/)|IH%*#[k15]))for(i=k=r=0; j=r*r-i*i-2+x/25,i=2*r*i+y/10,j*j+i*i11k++111;r=j

Re: [ZODB-Dev] unable to import ZODB: class ConflictError, AttributeError

2012-06-14 Thread Marius Gedminas
import transaction transaction.__file__ ? Marius Gedminas -- The IQ of the group is the lowest IQ of a member of the group divided by the number of people in the group. signature.asc Description: Digital signature ___ For more information about ZODB

Re: [ZODB-Dev] Is any function called when an object is loaded from the database?

2012-06-19 Thread Marius Gedminas
database growth and increase the chances of getting ConflictErrors. Marius Gedminas -- An expert is a person who has made all the mistakes that can be made in a very narrow field. -- Niels Bohr signature.asc Description: Digital signature

Re: [ZODB-Dev] Is any function called when an object is loaded from the database?

2012-06-19 Thread Marius Gedminas
): return PersistentDict() Marius Gedminas -- If you have to run heating in winter, you don't own enough computers. signature.asc Description: Digital signature ___ For more information about ZODB, see http://zodb.org/ ZODB-Dev mailing list

Re: [ZODB-Dev] How to cause commit with non-PersistentDict?

2012-06-19 Thread Marius Gedminas
to notice. Because ZODB caches object instances, nonpersistent subobject modifications live on in memory until those objects get flushed (or Zope gets restarted), so you only notice you've a bug in your code when changes start mysteriously disappearing a few days after they're made. Marius Gedminas

Re: [ZODB-Dev] Broken objects problem.

2012-08-08 Thread Marius Gedminas
, and not, say, '__main__'. Marius Gedminas -- Never be afraid to tell the world who you are. -- Anonymous signature.asc Description: Digital signature ___ For more information about ZODB, see http://zodb.org/ ZODB-Dev mailing list - ZODB-Dev

Re: [ZODB-Dev] zope.generations to standalone ZODB ?

2012-08-27 Thread Marius Gedminas
using various tricks: - class attributes with sensible default values for all newly-added attributes - autovivification via __getattr__ or properties (e.g. zope.cachedescriptors.property.Lazy) Marius Gedminas -- 5. Is RetchMail standards-compliant? Quick answer: HA HA HA HA HA HA

Re: [ZODB-Dev] [announce] NEO 1.0 - scalable and redundant storage for ZODB

2012-08-29 Thread Marius Gedminas
-- and that other transaction couldn't proceed because it was waiting for the ZEO lock.) Marius Gedminas -- People who think, Oh this is a one-off, need to be offed, or perhaps politely removed from the project. -- George Neville-Neil signature.asc Description: Digital signature

[ZODB-Dev] Storm/ZEO deadlocks (was Re: [Zope-dev] [announce] NEO 1.0 - scalable and redundant storage for ZODB)

2012-08-30 Thread Marius Gedminas
On Wed, Aug 29, 2012 at 06:30:50AM -0400, Jim Fulton wrote: On Wed, Aug 29, 2012 at 2:29 AM, Marius Gedminas mar...@gedmin.as wrote: On Tue, Aug 28, 2012 at 06:31:05PM +0200, Vincent Pelletier wrote: On Tue, 28 Aug 2012 16:31:20 +0200, Martijn Pieters m...@zopatista.com wrote : Anything

Re: [ZODB-Dev] Storm/ZEO deadlocks (was Re: [Zope-dev] [announce] NEO 1.0 - scalable and redundant storage for ZODB)

2012-08-31 Thread Marius Gedminas
On Thu, Aug 30, 2012 at 11:19:22AM -0600, Shane Hathaway wrote: On 08/30/2012 10:14 AM, Marius Gedminas wrote: Here's the code to reproduce it: http://pastie.org/4617132 Updated version with more explicit logging and fewer unnecessary things: http://pastie.org/4630898 And here's the output

Re: [ZODB-Dev] ZODB 4.0.0a1 released

2012-11-08 Thread Marius Gedminas
On Wed, Nov 07, 2012 at 04:45:59PM -0500, Jim Fulton wrote: Not to be confused with ZODB3! :) This is the first ZODB 4 release. Not to be confused with the old ZODB4 either, I suppose ;) http://wiki.zope.org/ZODB/ZODB4 Marius Gedminas -- A real friend isn't someone you use once

Re: [ZODB-Dev] API question

2013-01-14 Thread Marius Gedminas
it, at least with Python 2.x. Marius Gedminas -- We don't really understand it, so we'll give it to the programmers. signature.asc Description: Digital signature ___ For more information about ZODB, see http://zodb.org/ ZODB-Dev mailing list - ZODB-Dev

Re: [ZODB-Dev] what's the latest on zodb/zeo+memcached?

2013-01-18 Thread Marius Gedminas
as index_root: ZQ.preload_catalog(index_root.index.catalog) connwrap.close() Every thread has its own in-memory ZODB object cache, but if you have configured a persistent ZEO client cache, it should help. Marius Gedminas -- Never trust a computer you can't repair yourself

Re: [ZODB-Dev] ZODB Py3k porting status

2013-03-03 Thread Marius Gedminas
before we switched to zodbpickle, which indicates missing tests: pickles produces on Python 2 most likely cannot be loaded on Python 3 (that was one of the main reasons for zodbpickle's existence). Marius Gedminas -- You know, you never truly appreciate how handy living next to a creek

[ZODB-Dev] Towards ZODB on Python 3

2013-03-08 Thread Marius Gedminas
that, the ZODB py3 branch works on Python 3.3 [10]. As long as you're prepared to deal with bytestrings magically transforming into unicodes. [10] Stephan reported running an actual small demo application with it. Where do we go from here? Marius Gedminas -- Basically, what Ajax means

Re: [ZODB-Dev] ZEO test failures

2013-05-23 Thread Marius Gedminas
into these failures? I'm not familiar with ZEO. Marius Gedminas -- Nobody will ever need more than 640k RAM! -- Bill Gates, 1981 Windows 95 needs at least 8 MB RAM. -- Bill Gates, 1996 Nobody will ever need Windows 95

[ZODB-Dev] BTree data loss bug under Python 3.x

2013-05-24 Thread Marius Gedminas
, 1:1, 2:2}. There's also a larger test case (zodbfail.py) that modifies more than one item in a thread. That one fails pretty reliably. This only happens under Python 3.x. To reproduce:: git clone git://gist.github.com/5644876.git zodbfail cd zodbfail detox Marius Gedminas

Re: [ZODB-Dev] BTree data loss bug under Python 3.x

2013-05-25 Thread Marius Gedminas
On Fri, May 24, 2013 at 09:31:55PM -0400, Tres Seaver wrote: On 05/24/2013 01:28 PM, Marius Gedminas wrote: I was trying to debug a failing ZEO test case (testConcurrentUpdates), and found out it had nothing to do with ZEO. There's a bug either in BTrees or in ZODB itself that causes

Re: [ZODB-Dev] RFC: Attempts at Python2-compatible pickles cause unpicklable objects

2013-06-07 Thread Marius Gedminas
the beta release. Marius Gedminas -- The IQ of the group is the lowest IQ of a member of the group divided by the number of people in the group. signature.asc Description: Digital signature ___ For more information about ZODB, see http://zodb.org/ ZODB

Re: [ZODB-Dev] Changing namespace - best strategy

2013-07-15 Thread Marius Gedminas
containers everywhere; sometimes application-specific logic works best; sometimes you end up having to use ZODB iterators to loop through every single object in the DB -- I believe zodbupdate does that.) 3. (Optional) Remove the BBB import added in step 1. HTH, Marius Gedminas -- Voodoo Programming

Re: [ZODB-Dev] Changing namespace - best strategy

2013-07-17 Thread Marius Gedminas
/dictionary solution? Or am I misunderstanding it? No, this is based on ZODB's use of pickles. The database stores the fully-qualified name of the module and class of each object, so if you make the classes importable using the old module and class name, the objects can still be loaded. Marius Gedminas

Re: [ZODB-Dev] Changing namespace - best strategy

2013-08-23 Thread Marius Gedminas
On Thu, Aug 22, 2013 at 03:40:41PM -0600, Sean Upton wrote: Caveat to this below. On Mon, Jul 15, 2013 at 7:54 AM, Marius Gedminas mar...@gedmin.as wrote: On Mon, Jul 15, 2013 at 03:36:21PM +0200, Pedro Ferreira wrote: We need to move a considerable number of persistent objects (~40K

Re: [ZODB-Dev] POSKeyError when transaction.commit after savepoint.rollback and connection.readCurrent

2014-02-03 Thread Marius Gedminas
on Acquisition? Is it possible to replicate the bug using pure Python code? Marius Gedminas -- Q: A good ninja is hard to find. A: Well, yes, actually, being hard to find is the whole point with them. -- http://tinyurl.com/5tnrwr signature.asc Description: Digital signature

Re: [ZODB-Dev] POSKeyError when transaction.commit after savepoint.rollback and connection.readCurrent

2014-02-03 Thread Marius Gedminas
On Mon, Feb 03, 2014 at 03:33:13PM +0100, Godefroid Chapelle wrote: Le 03/02/14 15:12, Marius Gedminas a écrit : Could you tell us why that test depends on Acquisition? Is it possible to replicate the bug using pure Python code? I have not been able to replicate the bug with pure Python

Re: [ZODB-Dev] [zopefoundation/ZODB] 49919d: test for POSKeyError during transaction commit

2014-02-04 Thread Marius Gedminas
if they haven't, because obviously implicit is better than explicit, and when there's temptation the right thing is to guess behavior anyway, and we *definitely* don't want broken sdists on PyPI.) Marius Gedminas -- QOTD: A child of 5 could understand this! Fetch me a child of 5. signature.asc