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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7394) Optimize CollationController#collectTimeOrderedData() to potentially skip the sstables altogether
Date Mon, 23 Jun 2014 23:51:24 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-7394:
-----------------------------------------

    Priority: Trivial  (was: Minor)

> Optimize CollationController#collectTimeOrderedData() to potentially skip the sstables
altogether
> -------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7394
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7394
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Aleksey Yeschenko
>            Assignee: Aleksey Yeschenko
>            Priority: Trivial
>
> As of now, collectTimeOrderedData() will try to read from at least one sstable, even
if the memtable has a row tombstone with a higher timestamp than any max timestamp in the
sstable. If we initiate mostRecentRowTombstone with the value from the memtables and not Long.MIN_VALUE,
reading from the sstables can be avoided entirely in this scenario.



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