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Posted to commits@cassandra.apache.org by "Sam Tunnicliffe (Jira)" <ji...@apache.org> on 2020/11/27 17:00:00 UTC
[jira] [Commented] (CASSANDRA-16274) Improve performance when
calculating StreamTasks with optimised streaming
[ https://issues.apache.org/jira/browse/CASSANDRA-16274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17239785#comment-17239785 ]
Sam Tunnicliffe commented on CASSANDRA-16274:
---------------------------------------------
Found one additional copy-pasta: in {{DatabaseDescriptor:: autoOptimisePreviewRepairStreams}} we're returning {{conf.auto_optimise_inc_repair_streams}}
> Improve performance when calculating StreamTasks with optimised streaming
> -------------------------------------------------------------------------
>
> Key: CASSANDRA-16274
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16274
> Project: Cassandra
> Issue Type: Improvement
> Components: Consistency/Repair
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Priority: Normal
> Fix For: 4.0-beta4
>
>
> The way stream tasks are calculated currently is quite inefficient, improve that.
> Also, we currently try to distribute the streaming nodes evenly, this creates many more sstables than necessary - instead we should try to stream everything from a single peer, this should reduce the number of sstables created on the out-of-sync node.
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