当我尝试通过h2o.xgboost()与H2O 3.12.01在Windows 7和Windows Server 2008 R2上运行R中的XGboost时 ，出现以下错误：
错误：java.lang.UnsatisfiedLinkError：ml.dmlc.xgboost4j.java.XGBoostJNI.XGDMatrixCreateFromCSREx（[J [I [FI [J）I
这是一个可重现的例子：
library(h2o) h2o.init(nthreads = -1) h2o.no_progress() # Don't show progress bars in RMarkdown output # Import a sample binary outcome train/test set into H2O train <- h2o.importFile("https://s3.amazonaws.com/erin-data/higgs/higgs_train_10k.csv") test <- h2o.importFile("https://s3.amazonaws.com/erin-data/higgs/higgs_test_5k.csv") # Identify predictors and response y <- "response" x <- setdiff(names(train), y) # For binary classification, response should be a factor train[,y] <- as.factor(train[,y]) test[,y] <- as.factor(test[,y]) # Number of CV folds (to generate level-one data for stacking) nfolds <- 5 # Train & Cross-validate a (shallow) XGB-GBM my_xgb1 <- h2o.xgboost(x = x, y = y, training_frame = train, distribution = "bernoulli", ntrees = 50, max_depth = 3, min_rows = 2, learn_rate = 0.2, nfolds = nfolds, fold_assignment = "Modulo", keep_cross_validation_predictions = TRUE, seed = 1)
R version 3.4.0 Patched (2017-05-19 r72713) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows Server 2008 R2 x64 (build 7601) Service Pack 1 Matrix products: default locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] h2o_3.12.0.1 loaded via a namespace (and not attached): [1] compiler_3.4.0 tools_3.4.0 RCurl_1.95-4.8 jsonlite_1.5 bitops_1.0-6
3.12.01是在h2o.ai主页上连接的最新开发版本，在3.10中没有find这个函数后我升级了。 然而，@MarcoSandri发表的评论指出，他们的Amazon AWS上有一个更新的开发版本（3.13），因此下载了它并相应升级了集群和R包。
从3.12升级到3.13似乎顺利，直到我试图使用h2o.xgboost()函数。 然后它抛出了一个不同的错误：
Error in .h2o.doSafeREST(h2oRestApiVersion = h2oRestApiVersion, urlSuffix = page, :
ERROR MESSAGE: -1 Error in fetch(key) : lazy-load database 'E:/Program Files/R/R-3.4.0patched/library/h2o/help/h2o.rdb' is corrupt
H2O-3 XGBoost不支持Windows。 作为参考，这里是由H2O-3 XGBoost支持的操作系统列表：
http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/xgboost.html#limitations