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https://issues.apache.org/jira/browse/CASSANDRA-4588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams resolved CASSANDRA-4588.
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Resolution: Won't Fix
Wontfixing, since performance was never a goal as outlined in CASSANDRA-4012
> CQL COPY ... FROM command is slow
> ---------------------------------
>
> Key: CASSANDRA-4588
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4588
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Affects Versions: 1.1.4
> Environment: Ubuntu Linux 12.04, kernel 3.4.0
> Reporter: Piotr Kołaczkowski
>
> 1. created a csv file with 10,000,000 rows with two integer columns; saved it
> to an SSD disk, it took a few seconds, the file is 184 MB large.
> 2. started a single local cassandra node from fresh empty data and commit log
> dirs
> 3. created a keyspace with simple strategy and RF=1
> 4. loading the file with COPY ... FROM command - it is over 15 minutes now
> and still loading
> top reports about 50% CPU usage for java (cassandra) and 50% for python.
> I/O is almost idle, iowait < 0.1%.
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