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https://issues.apache.org/jira/browse/CASSANDRA-4921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499937#comment-13499937
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Aleksey Yeschenko commented on CASSANDRA-4921:
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For completeness: this is the cql-python commit that broke the compatibility:
https://code.google.com/a/apache-extras.org/p/cassandra-dbapi2/source/detail?r=620f813baae3b568349d3fc8886f9e29280f3164
(resolving this issue:
https://code.google.com/a/apache-extras.org/p/cassandra-dbapi2/issues/detail?id=19).
> improve cqlsh COPY FROM performance
> -----------------------------------
>
> Key: CASSANDRA-4921
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4921
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Affects Versions: 1.1.2
> Reporter: Jonathan Ellis
> Assignee: Aleksey Yeschenko
> Priority: Minor
> Fix For: 1.1.7
>
> Attachments: 4921.txt
>
>
> Profiling shows that prepare_inline takes the vast majority of cqlsh COPY
> FROM time, particularly on csv rows with many columns.
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