Github user sarutak commented on the pull request:
https://github.com/apache/spark/pull/3812#issuecomment-68143144
There is not a functional change for Spark itself but it's rather than for
other systems associating with Spark, like monitoring systems. The property is
used for metrics name so this issue can affects for users monitoring driver's
metrics.
As you mentioned, this change doesn't affects Spark itself but I think, we
should consider how features of Spark are used by user.
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