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https://issues.apache.org/jira/browse/ARROW-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-7206:
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Labels: patch pull-request-available (was: patch)
> avoid string concatenation when calling Preconditions#checkArgument
> -------------------------------------------------------------------
>
> Key: ARROW-7206
> URL: https://issues.apache.org/jira/browse/ARROW-7206
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: stephane campinas
> Assignee: stephane campinas
> Priority: Trivial
> Labels: patch, pull-request-available
> Attachments: after.png, before.png
>
>
> Preconditions#checkArgument is called in VectorLoader with the String message
> already built.
> This causes some noticeable overhead as can be seen from the attached flame
> graphs.
>
> Calling checkArgument with an error template instead avoids the call to
> StringBuilder as can be seen in the _after_ image.
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