Nutch1.3 Cannot run program chmod Cannot allocate memory

[zhouyang209117]

我在配制nutch1.3,照着nutch的官方文档（http://wiki.apache.org/nutch/NutchTutorial）运行bin/nutch crawl urls -dir crawl -depth 3 -topN 5这一步的过程中会出现如下错误：
LinkDb: adding segment: file:/home/zhou/nutch-1.3/runtime/local/crawl/segments/20111124092006
LinkDb: adding segment: file:/home/zhou/nutch-1.3/runtime/local/crawl/segments/20111124091951
LinkDb: adding segment: file:/home/zhou/nutch-1.3/runtime/local/crawl/segments/20111124092038
Exception in thread "main" java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1252)
at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:175)
at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:149)
at org.apache.nutch.crawl.Crawl.run(Crawl.java:142)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.nutch.crawl.Crawl.main(Crawl.java:54)

Hadoop log的提示是：
2011-11-24 09:21:08,939 WARN mapred.LocalJobRunner - job_local_0018
java.io.IOException: Cannot run program "chmod": java.io.IOException: error=12, Cannot allocate memory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:475)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:149)
at org.apache.hadoop.util.Shell.run(Shell.java:134)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:354)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:337)
at org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:481)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:473)
at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:280)
at org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:372)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:484)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:465)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:372)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:364)
at org.apache.hadoop.mapred.MapTask.localizeConfiguration(MapTask.java:111)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:173)

最关键的一句是Cannot run program "chmod": java.io.IOException: error=12, Cannot allocate memory。它说不能分配内存，是我的内存（2G）太小了吗?我的操作系统是Ubuntu11.10,nutch的版本是1.3。我已经在网上找了很长时间，但都没有结果。请求大家的帮助。

[attached]

我OUt了，这是什么

[dracularking]

cannot allocate memory
如果理解为内存不足的话

虽然是2g，但如果未必是该程序可用内存的话...
和swap space memory有关吗，

看过？
http://daimajishu.iteye.com/blog/959213

[dracularking]

Exception in thread "main" java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1252)
at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:175)
at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:149)
at org.apache.nutch.crawl.Crawl.run(Crawl.java:142)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.nutch.crawl.Crawl.main(Crawl.java:54)

这种程序不是跑在java虚拟机中的？那这些java代码是在哪里运行的

[yaoweijq]

chmod是shell赋权限的命令，
这个也会出异常？。。。

[zhouyang209117]

我用的不是虚拟机，应该不存在虚拟内存不足的问题吧。

[zhouyang209117]

[Quote=引用 4 楼 dracularking 的回复:]
Exception in thread "main" java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1252)
at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:175)
at org.apache.……
[/Quote]

你好。谢谢你的回复。我理解错你的意思了。我误以为你说的虚拟机是指在Windows下装一个Ubuntu的虚拟机。另外就是swap space memory太小的问题，我把swap space加到2G就好了。谢谢你。