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EuroPython's 4th Interview
by Tom Deprez 17 Jun '03

17 Jun '03

EuroPython's fourth interview! Ever heard about the Python Secret Underground movement? No? Well, _Martijn Faassen_ neither... But, he heard about some rumours and shared them with us. Confused concerning PSU? Who would not? But, perhaps Forest (an XML Database on the workbench) might help you to see the forest through the trees. Enjoy the interview at http://www.europython.org/other/interviews/entries/martijn_faassen. Regards, www.europython.org

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TranslationService 0.4 released
by Florent Guillaume 17 Jun '03

17 Jun '03

Nuxeo is pleased to announce the release of TranslationService 0.4, now Zope 2.7 compatible. TranslationService allows you to have fully functional internationalization from Page Templates using the standardized i18n tags of Zope 2.6+ and the global translation service it provides. The focus for this release was simply the Zope 2.7 compatibility. The next releases will focus on having more flexible ways to associate domains with a chain of several message catalogs. For more information, see: http://www.zope.org/Members/efge/TranslationService/ -- Florent Guillaume, Nuxeo (Paris, France) +33 1 40 33 79 87 http://nuxeo.com mailto:fg@nuxeo.com

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EuroPythons Donation system
by Tom Deprez 17 Jun '03

17 Jun '03

Hi all, Some people proposed to provide a donation system, so people can donate a certain amount to EuroPython. Of course we thought this would be a good idea and so we did. You can reach the donation page at http://www.europython.org/Registration/donation Regards, EuroPython

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ZODB 3.2b2 release
by Jeremy Hylton 17 Jun '03

17 Jun '03

We have released ZODB 3.2b2 available from the usual place: http://www.zope.org/Products/ZODB3.2 This release includes several critical bug fixes for ZEO. The bugs are more likely to affect sites that see a lot of read conflicts (resolved or unresolved). The bugs can cause data loss or corruption. These are the same bug fixes that went into ZODB 3.1.2b2 last week. ZODB 3.2 has a number of new features and improvements over ZODB 3.1: - improve performance and stability of ZEO - new ZEO authentication protocol - new configuration language, ZConfig, for databases, storages, and ZEO servers - many bug fixes I have included the release notes for 3.2b2 below. Jeremy What's new in ZODB3 3.2 beta 2 ============================== Release date: 16-Jun-2003 Fixed critical race conditions in ZEO's cache consistency code that could cause invalidations to be lost or stale data to be written to the cache. These bugs can lead to data loss or data corruption. These bugs are relatively unlikely to be provoked in sites with few conflicts, but the possibility of failure existed any time an object was loaded and stored concurrently. Fixed a bug in conflict resolution that failed to ghostify an object if it was involved in a conflict. (This code may be redundant, but it has been fixed regardless.) The ZEO server was fixed so that it does not perform any I/O until all of a transactions' invalidations are queued. If it performs I/O in the middle of sending invalidations, it would be possible to overlap a load from a client with the invalidation being sent to it. The ZEO cache now handles invalidations atomically. This is the same sort of bug that is described in the 3.1.2b1 section below, but it affects the ZEO cache. Fixed several serious bugs in fsrecover that caused it to fail catastrophically in certain cases because it thought it had found a checkpoint (status "c") record when it was in the middle of the file. Two new features snuck into this beta release. The ZODB.transact module provides a helper function that converts a regular function or method into a transactional one. The ZEO client cache now supports Adaptable Persistence (APE). The cache used to expect that all OIDs were eight bytes long.

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DBTab, CookieCrumbler, and TCPWatch updated
by Shane Hathaway 16 Jun '03

16 Jun '03

(This version of the announcement has URLs. :-) ) New releases of DBTab, CookieCrumbler, and TCPWatch are available. DBTab 1.2.1: Fixed a race condition, added unit tests, and added support for DemoStorage layering. http://hathaway.freezope.org/Software/DBTab CookieCrumbler 1.0: Added unit tests, fixed bugs, and provided an option for directing unauthorized but authenticated users to a different page than the login page. http://hathaway.freezope.org/Software/CookieCrumbler TCPWatch 1.2: Using the -r option, you can now log TCP sessions to a file. Also moved to distutils-based installation. Thanks to Tres Seaver. http://hathaway.freezope.org/Software/TCPWatch Shane

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DBTab, CookieCrumbler, and TCPWatch updated
by Shane Hathaway 16 Jun '03

16 Jun '03

New releases of DBTab, CookieCrumbler, and TCPWatch are available. DBTab 1.2.1: Fixed a race condition, added unit tests, and added support for DemoStorage layering. CookieCrumbler 1.0: Added unit tests, fixed bugs, and provided an option for directing unauthorized but authenticated users to a different page than the login page. TCPWatch 1.2: Using the -r option, you can now log TCP sessions to a file. Also moved to distutils-based installation. Thanks to Tres Seaver. Shane

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New interview at EuroPython2003
by Tom Deprez 16 Jun '03

16 Jun '03

EuroPython's third interview! is available Today _Marc-Andre Lemburg_ has the word: Read it at http://www.europython.org/other/interviews/entries/marcandre_lemburg All the people who use the mx Extensions for Python, should have heard about Marc-Andre. Regards, EuroPython

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EuroPython 2003
by Tom Deprez 16 Jun '03

16 Jun '03

Hi all, The EuroPython 2003 brochure is ready and available for download at: http://www.europython.org/other/brochure Interested in the countries represented at EuroPython? Here is a list: http://www.europython.org/news/newsEntries/20030616 See you within 8 days! Regards, EuroPython

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EuroPython news
by Tom Deprez 16 Jun '03

16 Jun '03

Hi all, The EuroPython 2003 brochure is ready and available for download at: http://www.europython.org/other/brochure Interested in the countries represented at EuroPython? Here is a list: Spain Belgium Germany Austria United Kingdom Tunisia Portugal Switzerland Ireland Sweden United States France Lithuania Finland Poland Denmark Czech Republic Italy Netherlands Canada See you within 8 days! Regards, EuroPython

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ZODB 3.1.2b2 released
by Jeremy Hylton 13 Jun '03

13 Jun '03

We have released ZODB 3.1.2b2 available from the usual place: http://www.zope.org/Products/ZODB3.1 This release includes several critical bug fixes for ZEO. The bugs are more likely to affect sites that see a lot of read conflicts (resolved or unresolved). The bugs can cause data loss or corruption. I would strongly advise ZEO users to consider upgrading. This release has seen more internal stress testing that normal and should be fairly stable for production use. I hope to get a final release out as soon as possible. The release notes (below) describe the fixes in more detail. Jeremy What's new in ZODB3 3.1.2 beta 2? ================================= Fixed critical race conditions in ZEO's cache consistency code that could cause invalidations to be lost or stale data to be written to the cache. These bugs can lead to data loss or data corruption. These bugs are relatively unlikely to be provoked in sites with few conflicts, but the possibility of failure existed any time an object was loaded and stored concurrently. Fixed a bug in conflict resolution that failed to ghostify an object if it was involved in a conflict. (This code may be redundant, but it has been fixed regardless.) The ZEO server was fixed so that it does not perform any I/O until all of a transactions' invalidations are queued. If it performs I/O in the middle of sending invalidations, it would be possible to overlap a load from a client with the invalidation being sent to it. The ZEO cache now handles invalidations atomically. This is the same sort of bug that is described in the 3.1.2b1 section below, but it affects the ZEO cache. Fixed several serious bugs in fsrecover that caused it to fail catastrophically in certain cases because it thought it had found a checkpoint (status "c") record when it was in the middle of the file.

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