Github user shijinkui commented on the pull request: https://github.com/apache/spark/pull/5164#issuecomment-85744268 @srowen thanks for viewing the trivial changes. the `zipPartitions` maybe have litter value. when readding code, i fount these trivial place, modify it by the way. i'm not bored:) just like you said marginal value, but when reading code in IDE, you can see so many yellow tips below screen shot. bad smell. if not clean the bad smell code, it will be everywhere. if not aggree, i'll close it. Thanks ![screen shot 2015-03-25 at 7 50 48 am](https://cloud.githubusercontent.com/assets/648508/6815357/b41d1f24-d2c3-11e4-9603-3bde21262573.png)
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