Github user tejasapatil commented on the pull request:
https://github.com/apache/spark/pull/11628#issuecomment-196901467
@srowen : That looks cleaner :)
- Calling `hasNext()` inside `next()` looks somewhat un-conventional to me.
But again, its based on an expectation that all clients would call `hashNext()`
before reading off the iterator which is not guaranteed. I have kept it as is.
- There was bug in `hasNext()` which I have fixed.
`propagateChildException()` needs to be called in the end just before returning
and not at the start. Otherwise the code won't propagate exception in some
cases. The test case added in the PR uncovered that. Its fixed now.
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