LoadError - undefined symbol: ZOOKEEPER_WRITE on CentOS/RHEL

[a2045z]

I encountered this issue after:

1. logged in as root
2. install rvm
3. install ruby 1.9.3-p374 thru rvm
4. gem install --no-rdoc --no-ri zookeeper
5. launch irb session:

require 'zookeeper'
LoadError: /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/ext/zookeeper_c.so: undefined symbol: ZOOKEEPER_WRITE - /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/ext/zookeeper_c.so
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:26:in block in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:ineach'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/ext/c_zookeeper.rb:8:in<top (required)>'
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:26:in block in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:ineach'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/ext/zookeeper_base.rb:3:in<top (required)>'
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:26:in block in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:ineach'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:25:in require_root' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper/client.rb:8:in<top (required)>'
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require' from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:18:in block in require_lib' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:17:ineach'
from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:17:in require_lib' from /usr/local/rvm/gems/ruby-1.9.3-p374/gems/zookeeper-1.4.2/lib/zookeeper.rb:50:in<top (required)>'
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in require' from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:inrescue in require'
from /usr/local/rvm/rubies/ruby-1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in require' from (irb):1 from /usr/local/rvm/rubies/ruby-1.9.3-p374/bin/irb:16:in

'>>

[slyphon]

Um, I have no idea. What version of centos?