yaooqinn commented on issue #26622: [WIP][SPARK-28023][Test] Cheap UTF8String Trim URL: https://github.com/apache/spark/pull/26622#issuecomment-557072074 result of master branch ```java [info] Java HotSpot(TM) 64-Bit Server VM 1.8.0_231-b11 on Mac OS X 10.15.1 [info] Intel(R) Core(TM) i5-5287U CPU @ 2.90GHz [info] Cast String to Integral: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative [info] ------------------------------------------------------------------------------------------------------------------------ [info] cast(trim(str) as int) as c_int - with 1 spaces 8325 10555 NaN 1.0 1016.3 1.0X [info] cast(trim(str) as int) as c_int - with 3 spaces 5433 9608 1466 1.5 663.2 1.5X [info] cast(trim(str) as int) as c_int - with 5 spaces 3886 4517 1069 2.1 474.4 2.1X [info] cast(trim(str) as long) as c_long - with 1 spaces 4609 9463 666 1.8 562.7 1.8X [info] cast(trim(str) as long) as c_long - with 3 spaces 4086 6527 1472 2.0 498.8 2.0X [info] cast(trim(str) as long) as c_long - with 5 spaces 4607 6806 NaN 1.8 562.3 1.8X [info] cast(str as int) as c_int - with 1 spaces 3426 3867 444 2.4 418.2 2.4X [info] cast(str as int) as c_int - with 3 spaces 3172 3479 356 2.6 387.2 2.6X [info] cast(str as int) as c_int - with 5 spaces 2839 3535 1037 2.9 346.6 2.9X [info] cast(str as long) as c_long - with 1 spaces 3098 3585 668 2.6 378.1 2.7X [info] cast(str as long) as c_long - with 3 spaces 3178 3456 340 2.6 388.0 2.6X [info] cast(str as long) as c_long - with 5 spaces 3094 4358 1052 2.6 377.7 2.7X [info] ```
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