Github user viirya commented on the issue: https://github.com/apache/spark/pull/13439 @kiszk I've run some benchmark codes. The benchmark results: ColumnVector R/W: Best/Avg Time(ms) Rate(M/s) Per Row(ns) Relative ------------------------------------------------------------------------------------------------ On Heap, Not Constant 57 / 59 0.7 1395.4 1.0X On Heap, Constant 44 / 44 0.9 1062.0 1.3X Off Heap, Not Constant 1059 / 1092 0.0 25861.4 0.1X Off Heap, Constant 998 / 1143 0.0 24373.4 0.1X
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