我在h中使用h2o軟件包進行建模。爲此,我想使用h2o.importfile()讀取大小約爲1.5 GB的數據集。我用線讀取h2o中的大文件(1.5 GB)R
library(h2oEnsemble)
h2o.init(max_mem_size = '1499m',nthreads=-1)
這將產生一個日誌
H2O is not running yet, starting it now...
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) Client VM (build 25.121-b13, mixed mode)
Starting H2O JVM and connecting: . Connection successful!
R is connected to the H2O cluster:
H2O cluster uptime: 3 seconds 665 milliseconds
H2O cluster version: 3.10.4.8
H2O cluster version age: 28 days, 14 hours and 36 minutes
H2O cluster name: H2O_started_from_R_Lucifer_jvn970
H2O cluster total nodes: 1
H2O cluster total memory: 1.41 GB
H2O cluster total cores: 4
H2O cluster allowed cores: 4
H2O cluster healthy: TRUE
H2O Connection ip: localhost
H2O Connection port: 54321
H2O Connection proxy: NA
H2O Internal Security: FALSE
R Version: R version 3.3.2 (2016-10-31)`
下面這行給我一個錯誤 train=h2o.importFile(path=normalizePath("C:\\Users\\All data\\traindt.rds"))
DistributedException from localhost/127.0.0.1:54321, caused by java.lang.AssertionError
DistributedException from localhost/127.0.0.1:54321, caused by java.lang.AssertionError
at water.MRTask.getResult(MRTask.java:478)
at water.MRTask.getResult(MRTask.java:486)
at water.MRTask.doAll(MRTask.java:402)
at water.parser.ParseDataset.parseAllKeys(ParseDataset.java:246)
at water.parser.ParseDataset.access$000(ParseDataset.java:27)
at water.parser.ParseDataset$ParserFJTask.compute2(ParseDataset.java:195)
at water.H2O$H2OCountedCompleter.compute(H2O.java:1315)
at jsr166y.CountedCompleter.exec(CountedCompleter.java:468)
at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)
at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)
at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)
at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)
Caused by: java.lang.AssertionError
at water.parser.Categorical.addKey(Categorical.java:41)
at water.parser.FVecParseWriter.addStrCol(FVecParseWriter.java:127)
at water.parser.CsvParser.parseChunk(CsvParser.java:133)
at water.parser.Parser.readOneFile(Parser.java:187)
at water.parser.Parser.streamParseZip(Parser.java:217)
at water.parser.ParseDataset$MultiFileParseTask.streamParse(ParseDataset.java:907)
at water.parser.ParseDataset$MultiFileParseTask.map(ParseDataset.java:856)
at water.MRTask.compute2(MRTask.java:601)
at water.H2O$H2OCountedCompleter.compute1(H2O.java:1318)
at water.parser.ParseDataset$MultiFileParseTask$Icer.compute1(ParseDataset$MultiFileParseTask$Icer.java)
at water.H2O$H2OCountedCompleter.compute(H2O.java:1314)
... 5 more
Error: DistributedException from localhost/127.0.0.1:54321, caused by java.lang.AssertionError
就如何解決這個問題的任何幫助啓動H2O服務器? 注意:分配大於1499mb的內存也會給我一個錯誤(無法分配內存)。我使用的是16GB RAM環境
編輯:我下載了64位版本的Java,並將我的文件更改爲csv文件。然後,我可以將max_mem_size分配給5G,問題就解決了。
對於其他人誰面對的問題: 1.下載64位JDK 2的最新版本執行下面的一行行
h2o.init(max_mem_size = '5g',nthreads=-1)
嘗試這個? https://github.com/h2oai/h2o-3/blob/master/h2o-docs/src/product/howto/FAQ.md – CPak