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https://issues.apache.org/jira/browse/CASSANDRA-9304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14646980#comment-14646980
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David Kua commented on CASSANDRA-9304:
--------------------------------------

[~Stefania] thank you!

I've updated the 9304 branch to resolve most of the points you wrote. I still 
need to test capping the number of processes at 4. 12 jobs was just the number 
of jobs that could be chained at once before the cluster would fail for me. 
However I was testing within a vagrant box and will be testing on my base 
machine soon. I couldn't think of a better dynamic number :/

> 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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