The latest from the MySQL community

I've already described Justin Swanhart's Flexviews project as something I think is cool. Since then Justin appears to have been working more on Shard-Query which I also think is cool, perhaps even more so than Flexviews.

On the page linked above, Shard-Query is described using the following statements :

"Shard-Query is a distributed parallel query engine for MySQL"
"ShardQuery is a PHP class which is intended to make working with a partitioned dataset easier""ParallelPipelining - MPP distributed query engines runs fragments of queries in parallel, combining the results at the end. Like map/reduce except it speaks SQL directly."

The things I like from the above description :

• Distributed
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In my last post I described the motivation for the new NDB$EPOCH conflict detection function in MySQL Cluster. This function detects when a row has been concurrently updated on two asynchronously replicating MySQL Cluster databases, and takes steps to keep the databases in alignment.

With NDB$EPOCH, conflicts are detected and handled on a row granularity, as opposed to column granularity, as this is the granularity of the epoch metadata used to detect conflicts. Dealing with conflicts on a …

70x Higher Performance, Cross Data Center Scalability and New NoSQL Interface

Its been an exciting week for all involved with MySQL Cluster, with the announcement of the second Development Milestone Release (7.2.1) at Oracle Open World. Highlights include:

- Enabling next generation web services: 70x higher complex query performance, native memcached API and integration with the latest MySQL 5.5 server

- Enhancing cross data scalability: new multi-site clustering and enhanced active/active replication

- Simplified provisioning: consolidated user privileges.

You can download the DMR for evaluation now from: http://dev.mysql.com/downloads/cluster/ (select Development Milestone Release tab).

You …

70x Higher Performance, Cross Data Center Scalability and New NoSQL Interface

Its been an exciting week for all involved with MySQL Cluster, with the announcement of the second Development Milestone Release (7.2.1) at Oracle Open World. Highlights include:

- Enabling next generation web services: 70x higher complex query performance, native memcached API and integration with the latest MySQL 5.5 server

- Enhancing cross data scalability: new multi-site clustering and enhanced active/active replication

- Simplified provisioning: consolidated user privileges.

You can download the DMR for evaluation now from: http://dev.mysql.com/downloads/cluster/ (select Development Milestone Release tab).

You …

Oracle's turn-about announcement of a NoSQL product wasn't really surprising. When Oracle spends time and effort putting down a technology, you can bet that its secretly impressed, and trying to re-implement it in its back room. So Oracle's paper "Debunking the NoSQL Hype" should really have been read as a backhanded product announcement. (By the way, don't click that link; the paper appears to have been taken down. Surprise.)

I have to agree with DataStax and other developers in the NoSQL movement: Oracle's announcement is a …

Join me for a webinar where I discuss how the recent changes and trends in big data management effect the enterprise.  This event is sponsored by Red Rock and RockSolid.

Overview:

It is an exciting and interesting time to be involved in data. More change of influence has occurred in the database management in the last 18 months than has occurred in the last 18 years. New technologies such as NoSQL & Hadoop and radical redesigns of existing technologies, like NewSQL , will change dramatically how we manage data moving forward. 

These technologies bring with them possibilities both in terms of the scale of data retained but also in how this data can be utilized as an information asset. The ability to leverage Big Data to drive …

Red Hat’s $136m acquisition of open source storage vendor Gluster marks Red Hat’s biggest buy since JBoss and starts the fourth quarter with a very intersting deal. The acquisition is definitely good for Red Hat since it bolsters its Cloud Forms IaaS and OpenShift PaaS technology and strategy with storage, which is often the starting point for enterprise and service provider cloud computing deployments. The acquisition also gives Red Hat another weapon in its fight against VMware, Microsoft and others, including OpenStack, of which Gluster is a member (more on that further down). The deal is also good for Gluster given the sizeable price Red Hat is paying for the provider of open source, software-based, scale-out storage for unstructured data and also as validation of both open source and software in today’s IT and cloud computing storage.

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As you probably know, I have been doing RDBMS work for many years, some 25+ years by now. At Recorded Future I am the database architect, and although an RDBMS is used extensively, MySQL in this case, we are looking at options, and are currently doing more and more work using a NoSQL Solution, probably te most popular one by now, namely MongoDB.

And before you complan: NoSQL is not a good term, but someone with a longer NoSQL background should then find something better, not yours truly. And for all intents and purposes, you know what I am talking about, right?

I plan to post a few MongoDB posts here, how it looks like from an RDBMS dudes (like myself) POV. This is the first installment, but there will be more. I should also point out that I am no expert in NoSQL technologies in general, nor specifically in MongoDB, but I am trying, and our MongoDB setup is large and complex enough to serve as a decent example: We have a …

tl;dr : New 'automatic' optimistic conflict detection functions available giving the best of both optimistic and pessimistic replication on the same data
MySQL replication supports a number of topologies, and one of the most interesting is an active-active, or master-master topology, where two or more Servers accept read and write traffic, with asynchronous replication between them.

This topology has a number of attractions, including :

• Potentially higher availability
• Potentially low impact on read/write latency
• Service availability insensitive to replication failures
• Conceptually simple

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Topics for this podcast:

*Cloud M&A potential around OpenStack
*Oracle’s commercial extensions for MySQL
*Puppet Labs rolls out Enterprise 2.0, hosts PuppetConf
*Basho bolsters Riak distributed data store in NoSQL race
*Our latest special CAOS report, ‘The Changing Linux Landscape’

iTunes or direct download (25:59, 4.4MB)