Hadoop 驱动程序单元测试用例
我用以下代码编写了MRunit：Hadoop 驱动程序单元测试用例,hadoop,junit,mapreduce,hadoop2,mrunit,Hadoop,Junit,Mapreduce,Hadoop2,Mrunit,我用以下代码编写了MRunit： Configuration conf = new Configuration(); conf.set("fs.defaultFS", "file:///"); conf.set("fs.default.name", "file:///"); conf.set("mapreduce.framework.name", "local"); conf.setInt("ma
Configuration conf = new Configuration();
conf.set("fs.defaultFS", "file:///");
conf.set("fs.default.name", "file:///");
conf.set("mapreduce.framework.name", "local");
conf.setInt("mapreduce.task.io.sort.mb", 1);
Path input = new Path("input/ncdc/micro");
Path output = new Path("output");
FileSystem fs = FileSystem.getLocal(conf);
fs.delete(output, true); // delete old output
VisitedItemFlattenDriver driver = new VisitedItemFlattenDriver();
driver.setConf(conf);
int exitCode = driver.run(new String[] {
input.toString(), output.toString(), "false" });
java.lang.NullPointerException
at java.lang.ProcessBuilder.start(ProcessBuilder.java:441)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:404)
at org.apache.hadoop.util.Shell.run(Shell.java:379)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:589)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:678)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:661)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:639)
at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:435)
at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:277)
at org.apache.hadoop.mapreduce.JobSubmissionFiles.getStagingDir(JobSubmissionFiles.java:125)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:344)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1268)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1265)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1265)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1286)
at biz.ds.www.preprocess.visiteditem.VisitedItemFlattenDriver.run(VisitedItemFlattenDriver.java:69)
public class VisitedItemFlattenDriver extends Configured implements Tool {
...}
如果有人指导如何解决错误，我深表感激 我尝试了几个选项来解决这个问题，并花费了很多时间 首先，我搜索了一个选项，找到了将winutils.exe和.dll文件添加到hadoop/bin的方法。我尝试了这个步骤，还设置了HADOOP_HOME环境变量 不知何故，上述错误得到了解决，然后我陷入了一个不同的错误，如下所示：
java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z