svn log hang after upgrade from version 1.7.5 to 1.8.3

Question

I recently upgraded my Subversion client from version 1.7.5 to 1.8.3 and from that time on I experience hangs when executing multiple 'svn log' commands in a short amount of time. The "hanging" svn process consumes all CPU cycles it gets but never finishes.

I can reproduce the problem using the following shell script (on Windows using Cygwin):

#!/bin/bash
ROOT="http://example.com/svn/trunk"
for DIR in $(svn ls "${ROOT}" | head -n 4); do
 svn log -v -l 5 "${ROOT}/${DIR}" 2>&1 | head -n 100 > /dev/null
done

In my environment I need at least 4 svn processes to achieve the faulty behavior. The hang only occurs if the output is truncated using the head command (but it can be redirected to a normal file instead of /dev/null which then contains the expected log messages).

Answer 1

It seems like issue #4425 [ http://subversion.tigris.org/issues/show_bug.cgi?id=4425 ] which is fixed in r1522892 and proposed for backport to Subversion 1.8.4.

Comments

I tried the nightly build of TortoiseSVN [1]

svn, version 1.8.4-dev (under development) compiled Oct 16 2013, 23:05:56 on x86-microsoft-windows

(as I was not able to compile the 1.8.x branch myself using Visual Studio 2008 because of a weird include path issue and the Subversion nightly build site delivers only a 404 page) and I was not able to reproduce the issue using my test case so I guess it is fixed.