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Posted to commits@cassandra.apache.org by "ZhaoYang (Jira)" <ji...@apache.org> on 2020/04/02 06:42:00 UTC
[jira] [Updated] (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:all-tabpanel ]
ZhaoYang updated CASSANDRA-15657:
---------------------------------
Reviewers: T Jake Luciani
> 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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