我想在Windows上使用Eclipse构建我的项目并在Linux群集上执行。该项目取决于一些外部的jar,我使用eclipse的“Export-> Runnable JAR - >将所需的库包装到jar”封装选项。我检查了jar包含文件夹结构中的类,并且外部jar文件位于根文件夹中。Jar使用独立的Hadoop,但不在实际的群集上(java.lang.ClassNotFoundException:org.jfree.data.xy.XYDataset)
Hadoop上的独立,Cygwin和Linux上,此工作正常,但实际的Hadoop Linux集群上失败了,当它试图从第一外部罐子访问类,扔了ClassNotFoundException
。
有没有办法强制Hadoop搜索jar,我认为这会奏效。
10/07/16 11:44:59 INFO mapred.JobClient: Task Id : attempt_201007161003_0005_m_000001_0, Status : FAILED
Error: java.lang.ClassNotFoundException: org.jfree.data.xy.XYDataset
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.akintayo.analysis.ecg.preprocess.ReadPlotECG.plotECG(ReadPlotECG.java:27)
at org.akintayo.analysis.ecg.preprocess.BuildECGImages.writeECGImages(BuildECGImages.java:216)
at org.akintayo.analysis.ecg.preprocess.BuildECGImages.converSingleECGToImage(BuildECGImages.java:305)
at org.akintayo.analysis.ecg.preprocess.BuildECGImages.main(BuildECGImages.java:457)
at org.akintayo.hadoop.HadoopECGPreprocessByFile$MapTest.map(HadoopECGPreprocessByFile.java:208)
at org.akintayo.hadoop.HadoopECGPreprocessByFile$MapTest.map(HadoopECGPreprocessByFile.java:1)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
at org.apache.hadoop.mapred.Child.main(Child.java:170)