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https://issues.apache.org/jira/browse/CASSANDRA-3668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13971786#comment-13971786
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Joshua McKenzie commented on CASSANDRA-3668:
--------------------------------------------

Attached patch against trunk.  Enables multiple StreamSessions per host 
abstracted behind a new StreamCoordinator class.  I also nested the "slice up 
sstable ranges to # of requested connections" logic in there.  Lastly - I 
modified the command-line tool to always print stack-traces on exceptions as 
discussed in CASSANDRA-7015.


> Parallel streaming for sstableloader
> ------------------------------------
>
>                 Key: CASSANDRA-3668
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3668
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API
>            Reporter: Manish Zope
>            Assignee: Joshua McKenzie
>            Priority: Minor
>              Labels: streaming
>             Fix For: 2.1 beta2
>
>         Attachments: 3668-1.1-v2.txt, 3668-1.1.txt, 3668_v2.txt, 
> 3688-reply_before_closing_writer.txt, sstable-loader performance.txt
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> One of my colleague had reported the bug regarding the degraded performance 
> of the sstable generator and sstable loader.
> ISSUE :- https://issues.apache.org/jira/browse/CASSANDRA-3589 
> As stated in above issue generator performance is rectified but performance 
> of the sstableloader is still an issue.
> 3589 is marked as duplicate of 3618.Both issues shows resolved status.But the 
> problem with sstableloader still exists.
> So opening other issue so that sstbleloader problem should not go unnoticed.
> FYI : We have tested the generator part with the patch given in 3589.Its 
> Working fine.
> Please let us know if you guys require further inputs from our side.



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