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OpenStack: All content tagged as OpenStack in NoSQL databases and polyglot persistence

MongoDB's TTL Collections in OpenStack's Marconi queuing service

Flavio Percoco describing some workaround OpenStack’s queing system is when using MongoDB’s TTL collections:

Even though it is a great feature, it wasn’t enough to cover Marconi’s needs since the later supports per message TTL. In order to cover this, one of the ideas was to implement something similar to Mongodb’s thread and have it running server-side but we didn’t want that for a couple of reasons: it needed a separated thread / process and it had a bigger impact in terms of performance.

This got me thinking it might be one of the (few) features missing from Redis.

✚ Redis supports timeouts for keys. Redis 2.6 brought the accuracy of expiring keys from 1 second to 1 millisecond.

✚ Redis has support for different data structures like lists, sets, and sorted sets. But it’s missing the combination of the two.

Original title and link: MongoDB’s TTL Collections in OpenStack’s Marconi queuing service (NoSQL database©myNoSQL)


Project Savanna: Hadoop and OpenStack

Timothy Prickett Morgan for The Register about Project Savanna, a collaboration between Mirantis, Hortonworks, and Red Hat:

Batman and Robin. Peanut butter and chocolate. OpenStack and Hadoop. These are things that go together, with the latter pairing being something that commercial OpenStack distie Mirantis, commercial Hadoop distie Hortonworks, and commercial KVM and Linux distie (and soon to be OpenStack commercializer) Red Hat are putting together under a new OpenStack effort dubbed Project Savanna.

Hadoop is at the age where everyone tries to package it and claim they’ll be the Red Hat of the Hadoop ecosystem. I cannot really dot the i-s and cross the t-s, but my gut feeling is that right now all these are actually more similar to the attempts of bringing Linux to the desktop.

We know how successful these have been so far.

Original title and link: Project Savanna: Hadoop and OpenStack (NoSQL database©myNoSQL)


Hortonworks Joins OpenStack Foundation

Hortonworks, a leading contributor to Apache Hadoop, today announced it has joined the OpenStack Foundation, which promotes the development, distribution and adoption of the OpenStack cloud operating system. By contributing to the OpenStack ecosystem, Hortonworks is supporting the open source community and facilitating adoption of 100-percent open source Apache Hadoop-based solutions in the cloud. Now customers will be able to access an enterprise-ready Hortonworks Data Platform built for the cloud that alleviates the time and complexities of manually deploying a big data solution.

What took this so long? Cloudera has been part of OpenStack since 2010.

Original title and link: Hortonworks Joins OpenStack Foundation (NoSQL database©myNoSQL)


OpenStack-based SDSC Cloud Storage Services

The San Diego Supercomputer Center (SDSC) at the University of California, San Diego announced a cloud storage solution based on OpenStack Swift Object Storage:

SDSC’s Cloud Storage provides academic and industry users with a convenient and affordable way to store, share, and archive data, including extremely large data sets. The object based storage system and multiple interface methods make the SDSC Cloud easy to use for the average user, but also provide a flexible, configurable, and expandable solution to meet the needs of more demanding applications.

Check out the project homepage for a short description of this new cloud offering characteristics.

Original title and link: OpenStack-based SDSC Cloud Storage Services (NoSQL database©myNoSQL)

Redis Part of the Rackspace OpenStack

Redis seems to be more and more associated with the cloud:

Soren Hansen (Rackspace) ☞ mentions Redis:

OpenStack (so far, at least) has two main components to it: A “compute” compenent called “Nova” and a “storage” component called “Swift”.


Nova is written in Python and uses Twisted.


Nova currently uses Redis for its key-value store. Nova can use either LDAP or its key-value store for its user database.