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Posted to commits@cassandra.apache.org by "Stefan Miklosovic (Jira)" <ji...@apache.org> on 2020/04/01 18:32:00 UTC
[jira] [Comment Edited] (CASSANDRA-15657) Improve
zero-copy-streaming containment check by using file sections
[ https://issues.apache.org/jira/browse/CASSANDRA-15657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073070#comment-17073070 ]
Stefan Miklosovic edited comment on CASSANDRA-15657 at 4/1/20, 6:31 PM:
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[~tjake] would you mind to look at this please?
was (Author: stefan.miklosovic):
[~tjake] would you mind to look at this?
> Improve zero-copy-streaming containment check by using file sections
> --------------------------------------------------------------------
>
> Key: CASSANDRA-15657
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15657
> Project: Cassandra
> Issue Type: Improvement
> Components: Legacy/Streaming and Messaging
> Reporter: ZhaoYang
> Assignee: ZhaoYang
> Priority: Normal
> Fix For: 4.0
>
>
> Currently zero copy streaming is only enabled for leveled-compaction strategy and it checks if all keys in the sstables are included in the transferred ranges.
> This is very inefficient. The containment check can be improved by checking if transferred sections (the transferred file positions) cover entire sstable.
> I also enabled ZCS for all compaction strategies since the new containment check is very fast..
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