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https://issues.apache.org/jira/browse/SPARK-15015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15291027#comment-15291027
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Tao Wang commented on SPARK-15015:
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I think it's a nice improvement for us to locate the code line more quickly.
Per discussion above there's no overhead in runtime but tiny at compilation.
I'd love to see it if the implement is lightweight :)
> Log statements lack file name/number
> ------------------------------------
>
> Key: SPARK-15015
> URL: https://issues.apache.org/jira/browse/SPARK-15015
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 1.6.1
> Environment: All
> Reporter: John-Michael Reed
> Priority: Trivial
> Labels: debug, log
>
> I would like it if the Apache Spark project had file names and line numbers
> in its log statements like this:
> http://i.imgur.com/4hvGQ0t.png
> The example uses my library, http://johnreedlol.github.io/scala-trace-debug/,
> but https://github.com/lihaoyi/sourcecode is also useful for this purpose.
> The real benefit in doing this is because the user of an IDE can jump to the
> location of a log statement without having to set breakpoints.
> http://s29.postimg.org/ud0knou1j/debug_Screenshot_Crop.png
> Note that the arrow will go to the next log statement if each log statement
> is hyperlinked.
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