When Jenkins performs an SVN update it hangs indefinitely (12 hours or more) at "At revision ..." until I either to a jstack or navigate to jenkins/threadDump a few times. The thread dump right before and right after the hang is fixed are attached.
It appears that it's possibly SVNKit and SVN 1.7 related?
Centos 6 64bit
java version "1.7.0_05-icedtea"
OpenJDK Runtime Environment (rhel-2.2.1.el6_3-x86_64)
OpenJDK 64-Bit Server VM (build 23.0-b21, mixed mode)