by OrderedRDDFunction could
know
its neighbors.
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leftOuterJoin previous leftOuterJoin next
Code looks clean to me, but I feel uneasy about the performance of join.
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It would be nice if an RDD that was massaged by OrderedRDDFunction could know
its neighbors.
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, tri.tail.head,
tri.last) ) toList
Now, in RDD, how do I do that (elegantly I hope)? I thought about zipping
an RDD with shifted self, but there are some messy partition issues about
zip.
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= idx.map(x = (x._2-1, x._1))
val joined = current leftOuterJoin previous leftOuterJoin next
Code looks clean to me, but I feel uneasy about the performance of join.
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