Github user cramja commented on the issue: https://github.com/apache/incubator-quickstep/pull/100 Agreed. I've been working on adding @navsan 's idea of merging contiguous attributes. I have another [branch with those changes](https://github.com/cramja/incubator-quickstep/tree/splitrow_partial_ins). It's almost ready, I'm in the process of benchmarking with TPCH to see if it can replace PackedRow. Granted this PR speeds up Splitrow, and has tests so can be merged.
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