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Posted to common-user@hadoop.apache.org by "Maha A. Alabduljalil" <ma...@umail.ucsb.edu> on 2010/12/12 01:00:21 UTC
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
Re: Error: ... It is indirectly referenced from required .class files - implements
Posted by maha <ma...@umail.ucsb.edu>.
Thanks for the advice Harsh! This worked :)
Maha
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).
>
> On Sun, Dec 12, 2010 at 10:06 AM, maha <ma...@umail.ucsb.edu> 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 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
>>> <ma...@umail.ucsb.edu>wrote:
>>>
>>>>
>>>> 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
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> -----李平
>>
>>
>
>
>
> --
> Harsh J
> www.harshj.com
Re: Error: ... It is indirectly referenced from required .class files
- implements
Posted by Harsh J <qw...@gmail.com>.
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).
On Sun, Dec 12, 2010 at 10:06 AM, maha <ma...@umail.ucsb.edu> 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 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
>> <ma...@umail.ucsb.edu>wrote:
>>
>>>
>>> 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
>>>
>>>
>>>
>>
>>
>> --
>> -----李平
>
>
--
Harsh J
www.harshj.com
Re: Error: ... It is indirectly referenced from required .class files - implements
Posted by maha <ma...@umail.ucsb.edu>.
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 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
> <ma...@umail.ucsb.edu>wrote:
>
>>
>> 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
>>
>>
>>
>
>
> --
> -----李平
Re: Error: ... It is indirectly referenced from required .class files
- implements
Posted by li ping <li...@gmail.com>.
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
<ma...@umail.ucsb.edu>wrote:
>
> 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
>
>
>
--
-----李平