I believe this is because you're running Hadoop on Windows. I don't know a thing about Windows but Hadoop uses some shell commands to operate. I suggest you try to find some resources on Hadoop running on Windows.
> Hi, I am running windows 7, JDK 1.6 and Nutch 1.2. When running a crawl > I get the following exception from the log: > > > > CrawlDb update: starting at 2011-01-20 15:59:58 > > CrawlDb update: db: crawl/crawldb > > CrawlDb update: segments: [crawl/segments/20110120155841] > > CrawlDb update: additions allowed: true > > CrawlDb update: URL normalizing: true > > CrawlDb update: URL filtering: true > > CrawlDb update: Merging segment data into db. > > Exception in thread "main" > org.apache.hadoop.util.Shell$ExitCodeException: > > at > org.apache.hadoop.util.Shell.runCommand(Shell.java:195) > > at org.apache.hadoop.util.Shell.run(Shell.java:134) > > at > org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286 > ) > > at > org.apache.hadoop.util.Shell.execCommand(Shell.java:354) > > at > org.apache.hadoop.util.Shell.execCommand(Shell.java:337) > > at > org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.j > ava:481) > > at > org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem > .java:473) > > at > org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.jav > a:280) > > at > org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:3 > 72) > > at > org.apache.hadoop.fs.FileSystem.create(FileSystem.java:484) > > at > org.apache.hadoop.fs.FileSystem.create(FileSystem.java:465) > > at > org.apache.hadoop.fs.FileSystem.create(FileSystem.java:372) > > at > org.apache.hadoop.fs.FileSystem.create(FileSystem.java:364) > > at > org.apache.hadoop.fs.FileSystem.create(FileSystem.java:243) > > at > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:787) > > at > org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:730) > > at > org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1249) > > at > org.apache.nutch.crawl.CrawlDb.update(CrawlDb.java:98) > > at > org.apache.nutch.crawl.CrawlDb.update(CrawlDb.java:61) > > at org.apache.nutch.crawl.Crawl.main(Crawl.java:137) > > > > Anyone come across this error? > > > > Thanks > > Michael
