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Cassandra Roadmap

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Evan Weaver

The document outlines the roadmap for future versions of Cassandra including removing support for range queries in 0.3, changing the data file format to support billions of rows per node in 0.4, adding load balancing and multi-table support in 0.5.

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Cassandra Jonathan Ellis
 
 
 
 
Roadmap
Cassandra 0.3 Remove support Range queries Test suite Workarounds for JDK bugs Rudimentary multi-datacenter support
Cassandra 0.4 Branched May 18 Data file format change to support billions of rows per node instead of millions API changes (no more colon delimiters) Multi-table (keyspace) support LRU key cache fsync support Web interface CQL
Cassandra 0.5 Bootstrap Load balancing Closely related to “bootstrap done right” Merkle tree repair Millions of columns per row This will require another data format change Multiget Callout support

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Cassandra Roadmap

  • 2.  
  • 3.  
  • 4.  
  • 5.  
  • 7. Cassandra 0.3 Remove support Range queries Test suite Workarounds for JDK bugs Rudimentary multi-datacenter support
  • 8. Cassandra 0.4 Branched May 18 Data file format change to support billions of rows per node instead of millions API changes (no more colon delimiters) Multi-table (keyspace) support LRU key cache fsync support Web interface CQL
  • 9. Cassandra 0.5 Bootstrap Load balancing Closely related to “bootstrap done right” Merkle tree repair Millions of columns per row This will require another data format change Multiget Callout support

Editor's Notes

  • #3: Facebook did its best to support the community, with the result that we're lucky it still exists at all.
  • #5: Still, Cassandra is very cool technology, and crucially, it's small enough to be understood and debugged by one person.