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https://issues.apache.org/jira/browse/SPARK-21491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16096079#comment-16096079
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Hyukjin Kwon commented on SPARK-21491:
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For me, I won't (don't) fix these but am fine if anyone is fond of it.
{{(collection.breakOut)}} does not looks like a replacement of {{.toMap}} to me
at all ...
Fixing it in a (super) hot path is okay to me. If not, for me -0.
> Performance enhancement: eliminate creation of intermediate collections
> -----------------------------------------------------------------------
>
> Key: SPARK-21491
> URL: https://issues.apache.org/jira/browse/SPARK-21491
> Project: Spark
> Issue Type: Improvement
> Components: GraphX
> Affects Versions: 2.2.0
> Reporter: Iurii Antykhovych
> Priority: Trivial
>
> Simple performance optimization in a few places of GraphX:
> {{Traversable.toMap}} can be replaced with {{collection.breakout}}.
> This would eliminate creation of an intermediate collection of tuples, see
> [Stack Overflow
> article|https://stackoverflow.com/questions/1715681/scala-2-8-breakout]
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