[CASSANDRA-17034] CEP-11: Memtable API implementation - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Normal
Resolution: Fixed
Fix Version/s: 4.1-alpha1, 4.1
Component/s: Local/Memtable
Labels:
None

Change Category:
Performance
Complexity:
Normal
Platform:

All
Impacts:

Docs
Source Control Link:

https://github.com/apache/cassandra/commit/e4e19e33faf9ac7cf27a9779c8083a7f5c5b865a
Test and Documentation Plan:

Hide

Existing memtable implementation is tested as before. New implementations will need to also perform all memtable tests in addition to implementation-specific unit tests.

New configuration options need to be added to the documentation.

Show
Existing memtable implementation is tested as before. New implementations will need to also perform all memtable tests in addition to implementation-specific unit tests. New configuration options need to be added to the documentation.

Description

Pluggable memtable API as described in CEP-11.

Initial version is already available in this branch, and needs to be updated to the changes in trunk. Two additional features suggested by CEP reviewers are also to be implemented:

Sharding support: extending the memtable owner interface to supply suitable shard boundaries that split the owned token space and are in agreement with disk boundaries.
Shared read API with sstables: defining a common interface for reading partitions from memtables and sstables; this is to include filters to avoid unnecessary copying.