Github user jerryshao commented on the pull request:
https://github.com/apache/spark/pull/5064#issuecomment-113337578
I didn't do lots of experiments on this, I think the improvement might be
reducing the minor GC effect, since we cache the host name (and this will move
the old generation), but I think it is hard to measure and validate, so @tdas
what's your opinion?
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