[Hadoop-common-user] Error: ... It is indirectly referenced from required .class files - implements

Hi all,

I extended my project path with the hadoop-0.20.2-core.jar file, but I can
see that some of the classes I need aren't there, so for example an error I
get:

" The type org.apache.commons.logging.Log cannot be resolved. It is
indirectly referenced from required .class files- implements "

Because I'm trying to use a MultiFileInputFormat for the WordCount example
as follows:

public class wcMultiFileInputFormat extends
MultiFileInputFormat<LongWritable, Text>{

public LineRecordReader getRecordReader(InputSplit split, JobConf
job, Reporter reporter){
return (new LineRecordReader());
}
}

Can someone guide me to how to solve this in a different way (ie.Make each
input file unSplittable) ... or how to add the required missing log.class?

Thank you so much,
Maha

On Dec 11, 2010, at 6:27 PM, li ping wrote:

Can you try to add the jar file in your Hadoop lib directory.

On Sun, Dec 12, 2010 at 8:00 AM, Maha A. Alabduljalil
wrote:

--
-----李平

On Sun, Dec 12, 2010 at 10:06 AM, maha wrote:
This is a compilation error I get in Eclipse ... So, I don't so how putting the hadoop-core.jar in the lib/ directory will change the error.
Do you suggest another way of running a hadoop java program ?

The way I do it is .. Create an Eclipse project , Build Paths --> Add External Archives: hadoop-core.jar and that's it !  When I check inside the jar, I can't find the binary class file I'm looking for. So how can I add a binary files to this jar? I tried adding the source file, but this requires a cascading addition of other files. What shall I do?

Although, I still appreciate your thoughts, thanks,

Maha

What I do is create a new pro

On Dec 11, 2010, at 8:48 PM, Harsh J wrote:

Try adding the commons-logging jar to your build path. It is available
in the lib/ folder of your Hadoop distribution.

If you use the MapReduce eclipse plugin which comes with the Hadoop
distro, it would add all required jars to create a Hadoop project
automatically (i.e. everything in lib/*.jar +
hadoop-mapred/hdfs/common).


--
Harsh J
www.harshj.com