[hail] move head/tail from crdd to rvd; fix linear memory usage #7788
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catoverdrive
previously requested changes
Jan 8, 2020
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| val newRDD = crdd.mapPartitionsWithIndex({ case (i, it) => | ||
| if (i == idxFirst) | ||
| it.drop(nDrop.toInt) |
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I believe it.drop is going to have issues with region clearing, since by default it's just going to call next() and hasNext() on the iterator.
catoverdrive
approved these changes
Jan 14, 2020
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Fixes #7765