Re: EOFException at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1508)......

[Marcos Ortiz]

Regards, waqas. I think that you have to ask to MapR experts.


On 05/25/2012 05:42 AM, waqas latif wrote:

Hi Experts,

I am fairly new to hadoop MapR and I was trying to run a matrix
multiplication example presented by Mr. Norstadt under following link
http://www.norstad.org/matrix-multiply/index.html. I can run it
successfully with hadoop 0.20.2 but I tried to run it with hadoop 1.0.3 but
I am getting following error. Is it the problem with my hadoop
configuration or it is compatibility problem in the code which was written
in hadoop 0.20 by author.Also please guide me that how can I fix this error
in either case. Here is the error I am getting.

The same code that you write for 0.20.2 should work in 1.0.3 too.

in thread "main" java.io.EOFException
         at java.io.DataInputStream.readFully(DataInputStream.java:180)
         at java.io.DataInputStream.readFully(DataInputStream.java:152)
         at
org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1508)
         at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)
         at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)
         at
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)
         at TestMatrixMultiply.fillMatrix(TestMatrixMultiply.java:60)
         at TestMatrixMultiply.readMatrix(TestMatrixMultiply.java:87)
         at TestMatrixMultiply.checkAnswer(TestMatrixMultiply.java:112)
         at TestMatrixMultiply.runOneTest(TestMatrixMultiply.java:150)
         at TestMatrixMultiply.testRandom(TestMatrixMultiply.java:278)
         at TestMatrixMultiply.main(TestMatrixMultiply.java:308)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:597)
         at org.apache.hadoop.util.RunJar.main(RunJar.java:156)

Thanks in advance

Regards,
waqas

Can you put here the completed log for this?
Best wishes

--
Marcos Luis Ortíz Valmaseda
 Data Engineer&&  Sr. System Administrator at UCI
 http://marcosluis2186.posterous.com
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