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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7237) Optimize batchlog manager to avoid full scans
Date Wed, 15 Oct 2014 13:37:34 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-7237:
-----------------------------------------
    Reviewer: Aleksey Yeschenko

> 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: Branimir Lambov
>            Priority: Minor
>             Fix For: 2.1.1
>
>
> 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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