Neither JavaHL or SWIG provide support for svn_fs_set_warning_func. That means
that any process using the bindings to commit via the FS (or repos) API gets the
default behaviour SVN_ERR_MALFUNCTION_NO_RETURN which causes the process to
abort. rep-cache failures are treated as non-fatal by our own servers, and by
the ra_local API, but a bindings process does not get to make that choice.
http://mail-archives.apache.org/mod_mbox/subversion-dev/201410.mbox/%3C87egtxiyr6.fsf_-_%40ntlworld.com%3E
http://svn.haxx.se/dev/archive-2014-10/0078.shtml