Jonathan Ellis created CASSANDRA-5511:
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Summary: Clean up backwards compatibility complexity for 2.0
Key: CASSANDRA-5511
URL: https://issues.apache.org/jira/browse/CASSANDRA-5511
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Jonathan Ellis
Assignee: Jonathan Ellis
Fix For: 2.0
We've supported rolling upgrades (network-compatible for read/write operations)
for several releases, but both 1.0 -> 1.1 and 1.1 -> 1.2 required being on a
recent release of the immediately prior major series for this to work as
desired.
Meanwhile, we still support reading sstables at least back to 0.6 and possibly
even earlier. This makes dealing with changes to the sstable quite
challenging; the recently written-and-reverted CASSANDRA-5487 comes to mind.
2.0 is a good place to drop support for sstables older than 1.2.5. Our
experience with network compatibility demonstrates that this is not an
unreasonable burden to impose, and the major version number change suggests
that this is a logical time to make such a change.
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