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Posted to commits@cassandra.apache.org by "Benedict Elliott Smith (Jira)" <ji...@apache.org> on 2020/03/18 08:59:00 UTC

[jira] [Commented] (CASSANDRA-15390) Avoid unnecessary collection/iterator allocations during btree construction

    [ https://issues.apache.org/jira/browse/CASSANDRA-15390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17061522#comment-17061522 ] 

Benedict Elliott Smith commented on CASSANDRA-15390:
----------------------------------------------------

+1

> Avoid unnecessary collection/iterator allocations during btree construction
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15390
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15390
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Local/Compaction
>            Reporter: Blake Eggleston
>            Assignee: Blake Eggleston
>            Priority: Normal
>             Fix For: 4.0
>
>
> A heavily used btree builder path does a lot of unnecessary conversions to and from collections and iterators. Adding dedicated support for Object[] reduces compaction garbage by up to 8.3%



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