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Posted to commits@cassandra.apache.org by "Aleksey Yeschenko (JIRA)" <ji...@apache.org> on 2014/05/15 00:25:55 UTC

[jira] [Created] (CASSANDRA-7237) Optimize batchlog manager to avoid full scans

Aleksey Yeschenko created CASSANDRA-7237:
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             Summary: Optimize batchlog manager to avoid full scans
                 Key: CASSANDRA-7237
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7237
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Aleksey Yeschenko
            Assignee: Aleksey Yeschenko
            Priority: Minor
             Fix For: 2.1.0


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.



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