[Nutch-general] please help!! It always return 0 hit.

Fri, 07 Apr 2006 02:34:03 -0700 

Hi Denis ,
According to your tutorial (http://wiki.apache.org/nutch/NutchHadoopTutorial): I have setup Nutch and Hadoop,so far so good.But when I performing a search,It always return 0 hit. So I want to do a search without hadoop, and used the command followed: bin/hadoop dfs -copyToLocal crawled crawled 


It seems that there is somthing wrong.would you give me some tips to debug 
it? I use the nutch 0.8 392087 revision.

The output said:


060407 172334 parsing 
jar:file:/nutch/search/lib/hadoop-0.1-dev.jar!/hadoop-defa                  
                           ult.xml

060407 172334 parsing file:/nutch/search/conf/hadoop-site.xml
060407 172334 No FS indicated, using default:boxA:9000
060407 172334 Client connection to 127.0.0.1:9000: starting

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    000/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00000/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    001/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00001/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    002/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00002/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    003/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00003/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    004/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00004/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    005/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00005/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    006/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00006/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    007/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00007/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    008/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00008/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    009/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00009/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    010/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00010/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.

060407 172335 Problem opening checksum file: 
/user/nutch/crawled/indexes/part-00                                         
    011/index.done.  Ignoring with exception java.rmi.RemoteException: 
java.io.IOExc                                              eption: Cannot 
open filename /user/nutch/crawled/indexes/part-00011/.index.done.           
                                  crc

       at org.apache.hadoop.dfs.NameNode.open(NameNode.java:120)
       at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)

       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces       
                                      sorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:237)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:216)
.




Best regards,
  Lin Yuan

_________________________________________________________________

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