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Date: Sun, 14 Sep 2008 01:37:44 -0700 (PDT)
From: "Edward J. Yoon (JIRA)" <jira@apache.org>
To: hama-dev@incubator.apache.org
Subject: [jira] Updated: (HAMA-55) Write dimension attributes when job
 completed
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     [ https://issues.apache.org/jira/browse/HAMA-55?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edward J. Yoon updated HAMA-55:
-------------------------------

    Fix Version/s: 0.1.0
           Status: Patch Available  (was: Open)

Submit for review.

> Write dimension attributes when job completed
> ---------------------------------------------
>
>                 Key: HAMA-55
>                 URL: https://issues.apache.org/jira/browse/HAMA-55
>             Project: Hama
>          Issue Type: Bug
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>             Fix For: 0.1.0
>
>         Attachments: HAMA-55.patch
>
>
> Hello,
> I changed the Matrix Addition example to do some matrix multiplications.
> A NullPointException occurred when I tried to multiply two times like this.
>  61     Matrix c = a.mult(b);
>  62     Matrix d = c.mult(b);
> (I changed line 61 from a.add(b) to a.mult(b) and added line 62.)
> I ran it in a distributed operation (real cluster).
> $ bin/hadoop jar hama-0.1.0-dev-examples.jar addition 3 3
> 08/09/11 12:07:58 INFO hama.AbstractMatrix: Initializing the matrix storage.
> 08/09/11 12:08:08 INFO hama.AbstractMatrix: Create the 3 * 3 random matrix :
> randivtpz
> 08/09/11 12:08:09 INFO hama.AbstractMatrix: Initializing the matrix storage.
> 08/09/11 12:08:19 INFO hama.AbstractMatrix: Create the 3 * 3 random matrix :
> randzzoyr
> Matrix A
> ----------------------
> 0.12246664942306407
> 0.47492867854942666
> 0.753402452679103
> 0.11948311310699711
> 0.04760886057850422
> 0.04664804577467441
> 0.4865392863824721
> 0.7541368692517372
> 0.5844076068157283
> Matrix B
> ----------------------
> 0.30800857170320417
> 0.250851984967709
> 0.5748486376994186
> 0.808254823959184
> 0.11114206173021035
> 0.021408513651528183
> 0.5489044167760238
> 0.23894781330682957
> 0.2000317464813144
> 08/09/11 12:08:19 INFO hama.AbstractMatrix: Initializing the matrix storage.
> 08/09/11 12:08:30 WARN mapred.JobClient: No job jar file set.  User classes
> may not be found. See JobConf(Class) or JobConf#setJar(String).
> 08/09/11 12:08:30 INFO mapred.JobClient: Running job: job_200809102127_0018
> 08/09/11 12:08:31 INFO mapred.JobClient:  map 0% reduce 0%
> 08/09/11 12:08:37 INFO mapred.JobClient:  map 66% reduce 0%
> 08/09/11 12:08:38 INFO mapred.JobClient:  map 100% reduce 0%
> 08/09/11 12:08:45 INFO mapred.JobClient:  map 100% reduce 50%
> 08/09/11 12:08:47 INFO mapred.JobClient:  map 100% reduce 61%
> 08/09/11 12:09:36 INFO mapred.JobClient:  map 100% reduce 100%
> 08/09/11 12:09:37 INFO mapred.JobClient: Job complete: job_200809102127_0018
> 08/09/11 12:09:38 INFO mapred.JobClient: Counters: 13
> 08/09/11 12:09:38 INFO mapred.JobClient:   File Systems
> 08/09/11 12:09:38 INFO mapred.JobClient:     Local bytes read=1542
> 08/09/11 12:09:38 INFO mapred.JobClient:     Local bytes written=3540
> 08/09/11 12:09:38 INFO mapred.JobClient:   Job Counters
> 08/09/11 12:09:38 INFO mapred.JobClient:     Launched map tasks=3
> 08/09/11 12:09:38 INFO mapred.JobClient:     Launched reduce tasks=3
> 08/09/11 12:09:38 INFO mapred.JobClient:   Map-Reduce Framework
> 08/09/11 12:09:38 INFO mapred.JobClient:     Map input records=3
> 08/09/11 12:09:38 INFO mapred.JobClient:     Map output records=9
> 08/09/11 12:09:38 INFO mapred.JobClient:     Map input bytes=0
> 08/09/11 12:09:38 INFO mapred.JobClient:     Map output bytes=1224
> 08/09/11 12:09:38 INFO mapred.JobClient:     Combine input records=0
> 08/09/11 12:09:38 INFO mapred.JobClient:     Combine output records=0
> 08/09/11 12:09:38 INFO mapred.JobClient:     Reduce input groups=3
> 08/09/11 12:09:38 INFO mapred.JobClient:     Reduce input records=9
> 08/09/11 12:09:38 INFO mapred.JobClient:     Reduce output records=3
> 08/09/11 12:09:38 INFO hama.AbstractMatrix: Initializing the matrix storage.
> 08/09/11 12:09:48 WARN mapred.JobClient: No job jar file set.  User classes
> may not be found. See JobConf(Class) or JobConf#setJar(String).
> java.lang.NullPointerException
>        at
> org.apache.hama.mapred.MatrixInputFormatBase.getSplits(MatrixInputFormatBase.java:212)
>        at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:712)
>        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:973)
>        at org.apache.hama.DenseMatrix.mult(DenseMatrix.java:185)
>        at
> org.apache.hama.examples.MatrixAddition.main(MatrixAddition.java:62)
>        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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
>        at
> org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
>        at
> org.apache.hama.examples.ExampleDriver.main(ExampleDriver.java:30)
>        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:155)
>        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:194)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>        at org.apache.hadoop.mapred.JobShell.main(JobShell.java:220)

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