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https://issues.apache.org/jira/browse/CASSANDRA-3668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13177432#comment-13177432
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Yuki Morishita edited comment on CASSANDRA-3668 at 12/29/11 10:33 PM:
----------------------------------------------------------------------
Manish,
sstableLloader loads sstables by streaming data files to the cluster, and from
1.0, CASSANDRA-3080 introduced throttling for streaming.
By default, {{stream_throughput_outbound_megabits_per_sec}} is set to 400 Mbps
or 50MB/sec.
You can turn off throttling by setting 0 inside cassandra.yaml.
You can observe the behavior of throttling in sstableloader by changing log
level to TRACE or DEBUG in conf/log4j-tools.properties, and look for log with
the term "Throttle". (Sample log output for throttling is attached in
CASSANDRA-3080.)
was (Author: yukim):
Manish,
sstableLloader loads sstables by streaming data files to the cluster, and from
1.0, CASSANDRA-3080 introduced throttling for streaming.
By default, {{stream_throughput_outbound_megabits_per_sec}} is set to 400 Mbps
or 50MB/sec.
You can turn off throttling by setting 0 inside cassandra.yaml.
You can observe the behavior of throttling by changing log level to TRACE or
DEBUG in conf/log4j-tools.properties, and look for log with the term
"Throttle". (Sample output for throttling is attached in CASSANDRA-3080.)
> Performance of sstableloader is affected in 1.0.x
> -------------------------------------------------
>
> Key: CASSANDRA-3668
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3668
> Project: Cassandra
> Issue Type: Bug
> Components: API
> Affects Versions: 1.0.7
> Reporter: Manish Zope
> Assignee: Yuki Morishita
> Fix For: 1.0.7
>
> 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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