From the Ubuntu mailing list:

From the first days of Ubuntu One, before we were even in Ubuntu, we’ve had a structured data storage sync service based around CouchDB.

For the last three years we have worked with the company behind CouchDB to make it scale in the particular ways we need it to scale in our server environment. Our situation is rather unique, and we were unable to resolve some of the issues we came across. We were thus unable to make CouchDB scale up to the millions of users and databases we have in our datacentres, and furthermore we were unable to make it scale down to be a reasonable load on small client machines.

Because of this, we are turning off most of our CouchDB-related efforts. […]

For these same three years we have created and maintained desktopcouch, which is a desktop service (and related library) to access CouchDB more conveniently. Because we are no longer going to pursue CouchDB, we will no longer be developing desktopcouch;

CouchDB Twitter account’s only comment:

Reports of my death are greatly exaggerated.

I’m filing this under what happened to CouchDB popularity.

Original title and link: Ubuntu One Drops CouchDB as Foundation of Data Sync (NoSQL database©myNoSQL)

via: https://lists.ubuntu.com/archives/ubuntu-desktop/2011-November/003474.html

What open source DB is shipped along with Ubuntu and so is on millions of computers today? If you guessed MySQL you lose. If you guessed CouchDB you are today’s lucky winner.  Yes, thats right, CouchDB is shipped with every version of Ubuntu and in terms of computers with it loaded on may be the biggest of the open source databases.

Make sure you are reading the comment thread (better than the rest of the article even).

Original title and link: CouchDB: The Most Widely Distributed, NoSQL Open Source DB (NoSQL databases © myNoSQL)

via: http://www.networkworld.com/community/node/69592

Views running slow with high CPU utilization on Ubuntu?

I had the same problem. The solution is simple and it already mentioned on CounDB-Wiki.

Simply create a file: $ sudo gedit /etc/ld.so.conf.d/xulrunner.conf

and paste path to the library of xulrunner and xulrunner-devel and !save it!

/usr/lib/xulrunner-x.x.x.x
  /usr/lib/xulrunner-devel-x.x.x.x

in your case it’s a 1.9.2.10

The next step is to run ldconfig $ sudo /sbin/ldconfig

Also read the ‘Note on installing on Ubuntu Desktop flavors’ section on Wiki.

Then let it start at system-boot $ sudo update-rc.d couchdb defaults

If you get a message that system-start for couchdb is already exist, simple remove the old entry: $ sudo update-rc.d -f couchdb remove and now retry to add the couchdb to system-start

Original title and link: CouchDB and Ubuntu: Configuration trick for (NoSQL databases © myNoSQL)

via: http://www.listware.net/201010/couchdb-user/34509-couchdb101-views-hangs-on-ubuntu-1004.htm

Once the initial setup of the Puppet master is done and the Hadoop Namenode and Jobtracker are up and running adding new Hadoop Workers is just one command:

./start_instance.py worker

Puppet automatically configures them to join the Hadoop Cluster.

But explaining how to set up the Puppet master, Hadoop Namenode and Jobtracker resulted in a very long post. It also looks like there are two versions for the Puppet recipe: Adobe’s for Hadoop/HBase deployments and ☞ some code on Launchpad

Original title and link: Hadoop: Cluster Deploy on EC2/UEC Using Puppet and Ubuntu (NoSQL databases © myNoSQL)

via: http://ubuntumathiaz.wordpress.com/2010/09/27/deploying-a-hadoop-cluster-on-ec2uec-with-puppet-and-ubuntu-maverick/

Separately, sources close to Canonical have told The Reg that the company is in talks with Cassandra and CouchDB on NoSQL, and start-up PuppetLabs for data-center automation and provisioning.

[…]

Canonical is targeting Hadoop and NoSQL – used by hyperscale providers like Yahoo! and Facebook – believing ordinary businesses are now ready to start use them for data processing and analytics.

Having in mind that both Hadoop and Cassandra are meant to be used in distributed systems, I’m wondering what exactly will Canonical offer by including these in Ubuntu? (note the secret sauce may be Puppet).

via: http://www.theregister.co.uk/2010/07/27/ubuntu_big_cloud_stack_integration/