testlist <- list(Command = 1551682918L, ff = c(4.91556103429207e+38, -3.63523250875922e+91,  -2.3698476907482e-12, 8.61669722805245e+103, -1.78139354896193e-283,  -8.05837887402677e+249, NaN, 2.46532046225687e-98, NaN, 2.37045919053446e+297,  -Inf, -1.20845115844211e-77, 2.8049023985725e-263, 8.90455267250727e-97,  -5.2147731536513e+24, -96370.8302162095, NaN, 1.16325063323489e+293,  -1.76081245070348e+296, 1.08404395477605e-130, 3.28867374698656e+162,  -1.61897526015758e+187, 2.29703355428573e-39, -6.22287897203263e+104,  4.00094097329252e-106, -5.43939014136403e-277, 6.01033838186927e-84,  -4.62523063177022e-11, 3.73463159273366e-65, -6.07548944269414e-218,  NA, 4.48140352045901e+163, 6.62570398725937e+40, 3.55519162378494e+83,  -4.14587605809302e-75, -3.54068044868552e+169, -8.01953637206437e-154,  -1.45924856418536e+139, -8.39211070059246e-234, 1.49574908293591e-11,  4.75797323393093e-216, 0), Index = c(-5.95910562608586e+123,  -8.81074923796508e+220, 2.98751496610519e-128, -4.14202793687734e+177,  1.16556331462481e-185, -3.07168051264337e-291, -10979345.9840459,  -Inf, 1.91904184414346e+115, 11596.7442332171, 8.39713329133356e-79,  -5.80325779441735e+65, -1.10097218493223e+43, -1.64586293424346e-294,  -2.39020287692848e-229, NA, 6.88627187884836e-81, 8.14517464734596e-29,  -1.38685790052267e-28, -5.5596433982516e+86, 3.99629515980045e+126,  -Inf, 5.60965354337939e-130, -Inf, 0), Inv_Cov_Y = structure(c(2.26376321294077e+241,  8.26333754032216e-148, 7.08941953354631e+155, 2.51387861095209e+162,  3.78854581540261e+57, 6.63664766467507e-05), .Dim = c(6L, 1L)),      m_feature = 515820303L, X = structure(c(1.71989700163021e-51,      4.07917496173353e+165, 11.4126620730419, 5.71161975194342e+62,      392547523747806, 4.49652815404873e+83, 8.29783096275115e+300,      1.44694460535527e-22, 5.24923537909702e+272, 4599873890604020224,      1.51667032522555e-225, 6.61248672625989e-257, 2.62736251134913e-264,      8.62422196953177e-89, 1.01362548601491e+74, 2.14828588283137e+78,      1.56355569872783e-81, 1.87144928514855e+289, 4.33713900917097e-104,      8.95061606531969e-07, 1.86530911350654e+250, 1.02817515733494e-81,      1.83373691827773e-104, 9.93170256377077e-171, 1088.07751695644,      8.8807736008108e+282, 5.10577627940228e-14, 9.71140106453329e-241,      7.70718615662346e-71, 1.4974142352784e+196, 1.44529238258315e+91,      4.09428352962162e+146, 8.78820712548496e+143, 1.60645519355506e-158,      2.54096333611907e-21, 2.36295222737535e+123, 1.93464690535798e-43,      0.00892625105931129, 1.30327416034052e+122, 4.33867249973442e+27     ), .Dim = c(10L, 4L)), Y = structure(c(7.31743197506801e-133,      2.94086197427846e+191, 6.95892849352828e+233, 3.02572639236545e+155,      2.99183365964687e+54, 6.4885285196867e-41, 2.00757649862499e+28,      9.88059922168545e+145, 1.7752153591415e-19, 2.88318398404295e-150,      1.14491376309772e+298, NA, NaN, NaN, 2.07831512263282e-289,      6.20751978617475, 9.15799089579821e+283, 2.07285968017074e-39,      2.42337266187196e-231, 3.221540805276e+53, 3.3018617552794e-51,      1.78534829423987e+224, 1.62578652352547e-42, 3.13370563298209e+63,      1.29649003513037e+107, 1.29040780902844e+91, 3.52617729269636e-252,      3.86292641230447e+281, 9.83594646753608e-110, 6.50612342427029e-137,      1.42396783330959e+141, 2.92460463218338e+218, 1.8424106195579e+168,      1.6138575720178e-28, 1.88408500370833e-236, 6.55160269216617e+148,      9.43345281158603e+75, Inf, 1.35823942412017e+206, 0.00262450907355171     ), .Dim = c(5L, 8L)))
result <- do.call(MultivariateRandomForest::splitt2,testlist)
str(result)