ALL COVERED TOPICS

NoSQL Benchmarks NoSQL use cases NoSQL Videos NoSQL Hybrid Solutions NoSQL Presentations Big Data Hadoop MapReduce Pig Hive Flume Oozie Sqoop HDFS ZooKeeper Cascading Cascalog BigTable Cassandra HBase Hypertable Couchbase CouchDB MongoDB OrientDB RavenDB Jackrabbit Terrastore Amazon DynamoDB Redis Riak Project Voldemort Tokyo Cabinet Kyoto Cabinet memcached Amazon SimpleDB Datomic MemcacheDB M/DB GT.M Amazon Dynamo Dynomite Mnesia Yahoo! PNUTS/Sherpa Neo4j InfoGrid Sones GraphDB InfiniteGraph AllegroGraph MarkLogic Clustrix CouchDB Case Studies MongoDB Case Studies NoSQL at Adobe NoSQL at Facebook NoSQL at Twitter

NAVIGATE MAIN CATEGORIES

Close

Cassandra 0.6.5: What is New?

Jonathan Ellis details what’s new in Cassandra 0.6.5:

  • Dynamic Snitch
  • Use mlockall via JNA, if present, to prevent Linux from swapping out parts of the JVM
  • Page within a single row during hinted handoff
  • Faster UUIDType, LongType comparisons
  • Log summary of dropped messages instead of spamming log

It’s interesting to hear that Cassandra had to go out of the VM in order to optimize its behavior by using mlockall on OSes supporting it. Also learning about the dynamic snitch:

Cassandra has always been good at dealing with cluster members who are all the way dead, thanks to its failure detector. The dynamic snitch lets us also handle members who are only mostly dead, that is, are still responding but with impaired performance.

[…]

The dynamic Snitch incorporates real-time request latency into its closeness metric, and routes requests to nodes that respond the fastest, no matter where they are actually located.

Original title and link for this post: Cassandra 0.6.5: What is New? (published on the NoSQL blog: myNoSQL)

via: http://www.riptano.com/blog/whats-new-cassandra-065