[CASSANDRA-7237] Optimize batchlog manager to avoid full scans

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.0 beta 1
• Assignee: Branimir Lambov
• Reporter: Aleksey Yeschenko

Authors

Branimir Lambov

Reviewers

Aleksey Yeschenko

• Created: 14/May/14 22:24
• Updated: 16/Apr/19 09:31
• Resolved: 06/Aug/15 14:34

Description

Now that we use time-UUIDs for batchlog ids, and given that w/ local strategy the partitions are ordered in time-order here, we can optimize the scanning by limiting the range to replay taking the last replayed batch's id as the beginning of the range, and uuid(now+timeout) as its end.

Issue Links

• is blocked by: CASSANDRA-8143 Partitioner should not be accessed through StorageService
• is depended upon by: CASSANDRA-8368 Consider not using hints for batchlog replay, in any capacity