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Re: Did you solve the 'Invalid diff stream: insn 0 cannot be decoded' problem?

From: Denny Page <denny_at_cococafe.com>
Date: 2006-02-28 06:59:57 CET


Sorry for not posting a follow up message to the mailing list. I've
been busy :-).

We did much to diagnose the problem, but have not diagnosed the root
cause at this time. We were able to mitigate the problem by disabling
the use of MPM Worker in Apache. We moved to prefork, and have not had
an event since.

We encountered several ways the corruption would be manifested:

  Invalid diff stream: insn cannot be decoded
  Invalid diff stream: insn overflows the target
  Svndiff contains corrupt window header
  Missing node-id in node-rev

The invalid diff stream variants were by far the most common.

Factors influencing occurrence of problem were:

  Large commits. The larger the commit, the more likely the corruption.
  Remote connections. The more remote the connection, the more likely
the corruption.

It's on my todo list to localize the problem and generate a fix, but it
will likely be a month or more before I get back to it. My best *guess*
is that there is a threading issue with Apache or Subversion.


Melikian, Chris wrote:
> Hi Denny,
> Did you solve your problem with the 'Invalid diff stream: insn 0
> cannot be decoded' error which I found at:-
> _http://svn.haxx.se/users/archive-2006-01/0437.shtml_
> We've got the same error so if you give us any hints if you have fixed
> it that would be great.
> Regards,
> Chris Melikian
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Received on Tue Feb 28 07:01:24 2006

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