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https://issues.apache.org/jira/browse/CASSANDRA-16274?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcus Eriksson updated CASSANDRA-16274:
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Status: Patch Available (was: In Progress)
pushed 2 commits to the branch above - one removes the duplicated
{{AsymmetricSyncRequest}} class in favour of a flag on {{SyncRequest}}, and the
second commit fixes the review comments
bq. shouldn't that same test verify that ReduceHelper::pickConsistent makes the
selections deterministic?
in the test we have:
{code}
addr3 will stream range1 from addr1 or addr2
range2 from addr1
{code}
so in a perfect setting we would stream range1 and range2 from addr1 - but if
addr2 sorts before addr1 we will stream range1 from addr2 - I added a todo on
the method that this can be improved
> 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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