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https://issues.apache.org/jira/browse/CASSANDRA-3619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-3619:
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Attachment: 0001-Add-separate-writer-thread.patch
Patch attached. On a small test that writes 1M rows with 10 columns, I see a
~30% improvement (but with CASSANDRA-3618 applied, otherwise it's not so clear).
> Use a separate writer thread for the SSTableSimpleUnsortedWriter
> ----------------------------------------------------------------
>
> Key: CASSANDRA-3619
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3619
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Affects Versions: 0.8.1
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 1.1
>
> Attachments: 0001-Add-separate-writer-thread.patch
>
>
> Currently SSTableSimpleUnsortedWriter doesn't use any threading. This means
> that the thread using it is blocked while the buffered data is written on
> disk and that nothing is written on disk while data is added.
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