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Status
Current state: AcceptedCommitted
Discussion thread: here
JIRA: CASSANDRA-17034
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New or Changed Public Interfaces
Database users
(Note: the final version ended up with a somewhat different scheme described in the bundled documentation.)
The primary user-facing change is the addition of a new table parameter “memtable”, specified in table definitions like this:
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(which defines two templates and specifies the default memtable implementation to use) to cassandra.yaml and specifying . The template can then be specified in the table definition like this:
CREATE TABLE ... WITH memtable = { 'template' : 'trie' }
in the table definition.
The initial implementation may leave existing memtable configuration parameters (memory mode, memory size limits and flush thresholds, expiration time) as top-level parameters in the yaml, with the expectation that they will be gradually replaced with memtable-specific ones and deprecated.
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