[ZODB-Dev] Re: Memory Errors reading large ZODB
Gary Poster wrote: you can call cache minimize after a threshold.. maybe every 100 iterations. sounds good, assuming you know you are not writing. Fantastic! My scripts are running without fail now (I used to have to change them to pick up where they left off and re-run about four times.) Thanks! -Jim ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
[ZODB-Dev] Re: Understanding conflicts
Dieter Maurer dieter at handshake.de writes: Jim Carroll wrote at 2007-6-12 15:57 +: ... The code that's running essentially does: add message to Persistent list in object get_transaction().commit() send_email() We are using Zodb 3.3a3, and ZEO 2.3a3. I've read that when a transaction retries, it re-runs code on the server side. The ZODB by itself does not rerun anything. Zope (its ZPublisher) retries a request up to three times when it fails due to a ConflictError. I'm not using Zope. I've got a quixote application that's using ZODB and ZEO. Somehow, the code that adds the message to the persistent list is running more than once. I have read that ZEO will re-run python code on a retry, and I think this is what's causing the duplicated data. In my mind, what I need is some sort of assurance that the Persistent List is only being appened to once. For some reason the commit() is causing it to be appended more than once when there's a conflict error. How can I isolate my transactions so that a conflict aborts the current transaction before re-trying? Thanks, -Jim ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
[ZODB-Dev] Error starting simplest ZEO instance
Hi I'm having trouble getting my web server started. It's starting ZEO, but zeo never completes the startup process. The zdctl.py is wating forever for a runzeo which fails instantly with error code 2. Im running ZODB 3.3.1 on Python 2.4 on Ubuntu. I've tried a stand-alone startup to see what's going on and it tells me: [EMAIL PROTECTED]:~/tmp# zdctl.py -p runzeo.py -a -f Data.fs start Error: invalid value for -m '18': invalid literal for int(): 18 For help, use /usr/bin/zdrun.py -h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (continues forever) I stepped through runzeo (and zdctl) with pdb, 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 the 18 that it's complaining about really is a valid int. If I remove that parameter I get: [EMAIL PROTECTED]:~/tmp# /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 But I never get the messages that tell me that it's starting up correctly. How can I get zdrun to accept -m 18 happly? Thanks, -Jim ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] Error starting simplest ZEO instance
On Sun, Aug 12, 2007 at 07:01:11PM +, Jim Carroll wrote: Hi I'm having trouble getting my web server started. It's starting ZEO, but zeo never completes the startup process. The zdctl.py is wating forever for a runzeo which fails instantly with error code 2. Im running ZODB 3.3.1 on Python 2.4 on Ubuntu. I've tried a stand-alone startup to see what's going on and it tells me: [EMAIL PROTECTED]:~/tmp# zdctl.py -p runzeo.py -a -f Data.fs start Error: invalid value for -m '18': invalid literal for int(): 18 Huh. I stepped through runzeo (and zdctl) with pdb, 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 of the story is that with a contrived example, you can prove anything. Oops. No, that's not what I meant to say. -- Joel Spolski signature.asc Description: Digital signature ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
[ZODB-Dev] Re: Error starting simplest ZEO instance
That leaves me without any clues why zdrun is failing on my new machine. So, what's the best way to troubleshoot why zdrun just waits forever? I'm currently trying to figure out how dulcinea decides what to hand to zeod (zeoctl.) I added the following line to my zeo.conf: runner transcript /www/log/zeo.runner /runner and the transcript told me that it was looking for a script in the wrong directory. Problem solved! ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
