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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9304) COPY TO improvements
Date Thu, 22 Oct 2015 02:41:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14968404#comment-14968404
] 

Stefania commented on CASSANDRA-9304:
-------------------------------------

I pushed one more commit to fix a [broken dtest|http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-9304-2.1-dtest/lastCompletedBuild/testReport/cqlsh_tests.cqlsh_tests/TestCqlsh/test_source_glass/].
It seems {{cStringIO}} does not support Unicode strings that cannot be encoded as ascii. I've
reintroduced {{StringIO.StringIO}}; performance does not seem to be affected.

I've also changed string formatting and removed {{OrderedDict}} in order to continue supporting
python 2.6, see discussion on CASSANDRA-10415.

> 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: Stefania
>            Priority: Minor
>              Labels: cqlsh
>             Fix For: 3.x, 2.1.x, 2.2.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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