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Posted to commits@cassandra.apache.org by "Blake Eggleston (Jira)" <ji...@apache.org> on 2019/12/05 21:12:00 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=16989183#comment-16989183 ]
Blake Eggleston commented on CASSANDRA-15390:
---------------------------------------------
Pushed up changes improving naming and adding comments about the why and the how
> 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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