A frequent question on cassandra-user@ and #cassandra on freenode IRC is summarized as follows:
“X.Y.Z is the current ‘stable’ version, should I deploy it to production or should I deploy the ‘oldstable’ version?”
My stock answer to this question is to say that Cassandra history shows :
- The lifetime of a major version (X.Y) is approximately one year.
- The initial release (X.Y.0) contains serious bugs. For example, Hinted Handoff was broken in both 1.0.0  and 1.1.0  releases.
- History shows that most of these bugs are discovered and resolved by version X.Y.6.
- The sixth minor version (X.Y.6) is typically released about 5 months after the .0 release, and is usually followed by at least 6 releases over the next 7 months.
- Within a few months of a X.Y.6, a new stable release results in “oldstable” receiving only bugfix changes.
“You should not deploy a Cassandra version X.Y.Z to production where Z <= 5.”
|Version||Release Date||Time After X.Y.0 release|
|1.0.6||12/14/11||2 months (“1.0 was rough”)|
|1.2.10||09/23/13||8 months (1.2.x line not done)|
 http://issues.apache.org/jira/browse/CASSANDRA-3466 (fixed in 1.0.3)
 http://issues.apache.org/jira/browse/CASSANDRA-4772 (fixed in 1.1.6)