Nutch路径错误

Question

按照本教程的要求，使用http://wiki.apache.org/nutch/NutchTutorial和http://www.nutchinstall.blogspot.com/

当我接受命令的时候

bin/nutch crawl urls -dir crawl -depth 3 -topN 5

我有这个错误

LinkDb: adding segment: file:/C:/cygwin/home/LeHung/apache-nutch-1.4-bin/runtime/local/crawl/segments/20120301233259
LinkDb: adding segment: file:/C:/cygwin/home/LeHung/apache-nutch-1.4-bin/runtime/local/crawl/segments/20120301233337
Exception in thread "main" org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:/C:/cygwin/home/LeHung/apache-nutch-1.4-bin/runtime/local/crawl/segments/20120301221729/parse_data
Input path does not exist: file:/C:/cygwin/home/LeHung/apache-nutch-1.4-bin/runtime/local/crawl/segments/20120301221754/parse_data
Input path does not exist: file:/C:/cygwin/home/LeHung/apache-nutch-1.4-bin/runtime/local/crawl/segments/20120301221804/parse_data
        at org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:190)
        at org.apache.hadoop.mapred.SequenceFileInputFormat.listStatus(SequenceFileInputFormat.java:44)
        at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:201)
        at org.apache.hadoop.mapred.JobClient.writeOldSplits(JobClient.java:810)
        at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:781)
        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.LinkDb.invert(LinkDb.java:175)
        at org.apache.nutch.crawl.LinkDb.invert(LinkDb.java:149)
        at org.apache.nutch.crawl.Crawl.run(Crawl.java:143)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.nutch.crawl.Crawl.main(Crawl.java:55)

我使用cygwin，windows来运行nutch

Answer 1

检查是否按照上述错误中给出的路径显示了parse_data文件夹。确保已创建在命令中指定的crawl文件夹内的文件夹，并且这些文件夹可供使用。

Answer 2

我也遇到过类似的问题。我删除了数据库和目录。在那之后，它运行正常。