That's a pretty old version of pycassa; it was release before 0.7.0 came out. I suggest upgrading.
It's possible this was caused by an old bug, but in general, this indicates that you have more threads trying to use the ConnectionPool concurrently than there are connections. On Wed, Jul 25, 2012 at 3:30 AM, Adeel Akbar <adeel.ak...@panasiangroup.com>wrote: > Hi, > > I have created 2 node cluster and use with application. My application > unable to connect with database. Please find below logs; > > NoConnectionAvailable at / > > ConnectionPool limit of size 2 overflow 2 reached, unable to obtain > connection after 30 seconds > > Request Method: GET Request URL: http://172.16.100.131/ Django > Version: 1.4 Exception Type: NoConnectionAvailable Exception Value: > > ConnectionPool limit of size 2 overflow 2 reached, unable to obtain > connection after 30 seconds > > Exception Location: > /usr/local/lib/python2.6/site-packages/pycassa-1.0.8-py2.6.egg/pycassa/pool.py > in get, line 738 Python Executable: /usr/local/bin/python Python > Version: 2.6.4 Python Path: > > ['/var/www/bs_ping', > '/usr/local/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/amqplib-0.6.1-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/BeautifulSoup-3.1.0.1-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/python_dateutil-1.4.1-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/feedparser-4.1-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/python_twitter-0.6-py2.6.egg', > > '/usr/local/lib/python2.6/site-packages/simplejson-2.0.9-py2.6-linux-i686.egg', > '/usr/local/lib/python2.6/site-packages/txAMQP-0.3-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-i686.egg', > > '/usr/local/lib/python2.6/site-packages/zope.interface-3.5.2-py2.6-linux-i686.egg', > '/usr/local/lib/python2.6/site-packages/UnicodeUtils-0.3.2-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/pytz-2009p-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/ScriptUtils-0.5.5-py2.6.egg', > > '/usr/local/lib/python2.6/site-packages/MySQL_python-1.2.3c1-py2.6-linux-i686.egg', > '/usr/local/lib/python2.6/site-packages/python_memcached-1.44-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/coverage-3.2b1-py2.6-linux-i686.egg', > '/usr/local/lib/python2.6/site-packages/flup-1.0.3.dev_20091027-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/oauth-1.0.1-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/pyOpenSSL-0.10-py2.6-linux-i686.egg', > '/usr/local/lib/python2.6/site-packages/pycassa-1.0.8-py2.6.egg', > > '/usr/local/lib/python2.6/site-packages/wadofstuff_django_serializers-1.1.0-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/jsonpickle-0.4.0-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/django_compressor-1.1.2-py2.6.egg', > '/usr/local/lib/python2.6/site-packages/django_appconf-0.5-py2.6.egg', > '/usr/local/lib/python26.zip', > '/usr/local/lib/python2.6', > '/usr/local/lib/python2.6/plat-linux2', > '/usr/local/lib/python2.6/lib-tk', > '/usr/local/lib/python2.6/lib-old', > '/usr/local/lib/python2.6/lib-dynload', > '/usr/local/lib/python2.6/site-packages', > '/usr/local/lib/python2.6/site-packages/PIL', > '/var/www/bs_ping/', > '/var/www'] > > Server time: Wed, 25 Jul 2012 13:17:33 +0500 > -- > > > Thanks & Regards > > *Adeel** Akbar* > -- Tyler Hobbs DataStax <http://datastax.com/>
