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Cassandra GUI evolved from its first version and new version includes bug fixes and enhanced features. New features. Complete pagination for Row view of explorer Search rows by their names.
Hello, We were occasionally experiencing client exceptions with 0.6.3, so we upgraded to 0.7.0 a couple weeks ago, but unfortunately we now get more client exceptions, and more frequently.
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AstyanaxContext < Keyspace > context = new AstyanaxContext . Builder () . forCluster ( "ClusterName" )
Database storage is expensive. This is especially true if you build a traditional SAN based M+N cluster.
"Building on Quicksand" Paper for CIDR (Conference on Innovative Database Research) - PatHelland's WebLogI just submitted the final (photo-ready) version of a new paper called "Building on Quicksand" to the Conference on Innovative Database Research .
This section describes how to upgrade Cassandra 0.8.x to 1.0.x and how to upgrade between minor releases of Cassandra 1.0.x.
Cassandra 1.0 introduces support for data compression on a per-ColumnFamily basis, one of the most-requested features since the project started. Compression maximizes the storage capacity of your Cassandra nodes by reducing the volume of data on disk.
A little more than a year ago, Apache Cassandra's reputation was untouchable.
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Effective tuning depends not only on the types of operations your cluster performs most frequently, but also on the shape of the data itself.
More and more instrumentation is being added to Cassandra via standard JMX apis. The nodetool utility ( nodeprobe in versions prior to 0.6) provides a simple command line interface to these exposed operations and attributes. See Operations for a more high-level view of when you would want to use the actions described here.
I was looking at Cassandra , one of the major NoSQL solutions, and I was immediately impressed with its write speed even on my notebook. But I also noticed that it was very volatile in its response time, so I took a deeper look at it. First Cassandra Write Test I did the first write tests on my local machine, but I had a goal in mind. I wanted to see how fast I could insert 150K data points each consisting of 3 values.
I want to write about Cassandra performance tuning, but first I need to cover some basics: how to use vmstat, iostat, and top to understand what part of your system is the bottleneck -- not just for Cassandra but for any system.
Sometimes, data comes with an expiration date, either by its nature or because it’s simply intractable to keep all of a rapidly growing dataset indefinitely.
Tokens, Partitioners, and the Ring