Github user ggevay commented on the pull request:
https://github.com/apache/flink/pull/1614#issuecomment-182025617
Shouldn't the current record remain valid if `hasNext()` returned true? I
mean the user might be holding on to the object returned in `next`, and expect
it to not be changed by a `hasNext` call:
```
T cur = it.next();
if(it.hasNext()) {
// here, I would expect cur to not have changed since the next() call
}
```
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