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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9304) COPY TO improvements
Date Sat, 01 Aug 2015 07:15:08 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14650192#comment-14650192
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Stefania commented on CASSANDRA-9304:
-------------------------------------

Thanks, looking good so far.

* We should be careful about the number of jobs actually, we should perhaps use a conservative
number and let people increase it via a configuration parameter?

* In {{RateMeter.increment}} I don't understand why the {{elif (self.current_record % self.log_rate
== 0):}} has been replaced with a simple {{else}}, doesn't this change the behavior?

Do you have a dtest branch where you are adding the extended tests?

> COPY TO improvements
> --------------------
>
>                 Key: CASSANDRA-9304
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9304
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: David Kua
>            Priority: Minor
>              Labels: cqlsh
>             Fix For: 2.1.x
>
>
> COPY FROM has gotten a lot of love.  COPY TO not so much.  One obvious improvement could
be to parallelize reading and writing (write one page of data while fetching the next).



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