Subversion Hook succeeds inconsistently (very strange)

[Bradley Molander <Br...@nisc.coop>]

Apparently, with most commits through the dav connector, a newline is being appended. Subversion pre-commit hook nearly always fails because of this even when the only text in the file is:

------------
#!/bin/sh
exit 0
------------

We have been using subversion for 18 months with no problems. Once we upgraded to 1.3, the dav connector more often than not reports a hook error when there isn't one (using above script). Sometimes, it passes, but usually not (~ 10 failures to every success). If we use svnserve, the hook works properly (so do our normal hooks). 

What could cause this? In the apache log I see: 
[Tue Sep 05 21:33:44 2006] [error] [client *host*] Could not MERGE resource "/dav/test2/!svn/act/b616d8cd-bf1c-0410-9d09-cae5edde832e" into "/dav/test2".  [409, #0]
[Tue Sep 05 21:33:44 2006] [error] [client *host*] An error occurred while committing the transaction.  [409, #165001]
[Tue Sep 05 21:33:44 2006] [error] [client *host*] 'pre-commit' hook failed with error output:\n  [409, #165001]

The '\n' seems to be tripping the connector into thinking the script failed. Not sure where it even came from. Is this a neon problem? Race?

System:
SUSE 10.1
Subversion 1.3.0 (also tried 1.3.2 from source)
apache2


Any ideas?
Brad

Re: Subversion Hook succeeds inconsistently (very strange)

[John Szakmeister <jo...@szakmeister.net>]

----- Bradley Molander <Br...@nisc.coop> wrote:
> Apparently, with most commits through the dav connector, a newline is
> being appended. Subversion pre-commit hook nearly always fails because
> of this even when the only text in the file is:
> 
> ------------
> #!/bin/sh
> exit 0
> ------------
> 
> We have been using subversion for 18 months with no problems. Once we
> upgraded to 1.3, the dav connector more often than not reports a hook
> error when there isn't one (using above script). Sometimes, it passes,
> but usually not (~ 10 failures to every success). If we use svnserve,
> the hook works properly (so do our normal hooks).
> 
> What could cause this? In the apache log I see:
> [Tue Sep 05 21:33:44 2006] [error] [client *host*] Could not MERGE
> resource "/dav/test2/!svn/act/b616d8cd-bf1c-0410-9d09-cae5edde832e"
> into "/dav/test2". [409, #0]
> [Tue Sep 05 21:33:44 2006] [error] [client *host*] An error occurred
> while committing the transaction. [409, #165001]
> [Tue Sep 05 21:33:44 2006] [error] [client *host*] 'pre-commit' hook
> failed with error output:\n [409, #165001]
> 
> The '\n' seems to be tripping the connector into thinking the script
> failed. Not sure where it even came from. Is this a neon problem?
> Race?
> 
> System:
> SUSE 10.1
> Subversion 1.3.0 (also tried 1.3.2 from source)
> apache2
> 
> 
> Any ideas?

Are you using mod_php?  I ran into a number of issues trying to get a blog with mod_php4 and Subversion working together.  I had to start a completely separate instance of Apache (one with Subversion, the other with the blog) to get it to function. :-(  But there error I got consistently up until that point was exactly what you're seeing.  FWIW, at least one other user on this list has seen similar behavior mixing the two as well.

-John

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