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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1880) "java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result." while running "hadoop jar hadoop-0.20.1+169.89-examples.jar pi 4 30"
Date Sat, 19 Jun 2010 21:45:40 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated MAPREDUCE-1880:
----------------------------------------------

    Status: Patch Available  (was: Open)

> "java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable
decimal result." while running "hadoop jar hadoop-0.20.1+169.89-examples.jar pi 4 30"
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1880
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1880
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: examples
>    Affects Versions: 0.20.1
>         Environment: ubuntu 10.04 lucid
> sun jdk 6
> hadoop packaged by cloudera
>            Reporter: Victor Pakhomov
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Minor
>             Fix For: 0.20.1
>
>         Attachments: m1880_20100619_0.20.patch, m1880_20100619b.patch
>
>
> If I run "hadoop jar hadoop-0.20.1+169.89-examples.jar pi 4 30", I get the following
output:
> Number of Maps  = 4
> Samples per Map = 30
> Wrote input for Map #0
> Wrote input for Map #1
> Wrote input for Map #2
> Wrote input for Map #3
> Starting Job
> 10/06/19 21:50:34 INFO mapred.FileInputFormat: Total input paths to process : 4
> 10/06/19 21:50:34 INFO mapred.JobClient: Running job: job_201006192101_0003
> 10/06/19 21:50:35 INFO mapred.JobClient:  map 0% reduce 0%
> 10/06/19 21:50:45 INFO mapred.JobClient:  map 50% reduce 0%
> 10/06/19 21:50:51 INFO mapred.JobClient:  map 100% reduce 0%
> 10/06/19 21:51:00 INFO mapred.JobClient:  map 100% reduce 100%
> 10/06/19 21:51:02 INFO mapred.JobClient: Job complete: job_201006192101_0003
> 10/06/19 21:51:02 INFO mapred.JobClient: Counters: 18
> 10/06/19 21:51:02 INFO mapred.JobClient:   Job Counters 
> 10/06/19 21:51:02 INFO mapred.JobClient:     Launched reduce tasks=1
> 10/06/19 21:51:02 INFO mapred.JobClient:     Launched map tasks=4
> 10/06/19 21:51:02 INFO mapred.JobClient:     Data-local map tasks=4
> 10/06/19 21:51:02 INFO mapred.JobClient:   FileSystemCounters
> 10/06/19 21:51:02 INFO mapred.JobClient:     FILE_BYTES_READ=94
> 10/06/19 21:51:02 INFO mapred.JobClient:     HDFS_BYTES_READ=472
> 10/06/19 21:51:02 INFO mapred.JobClient:     FILE_BYTES_WRITTEN=334
> 10/06/19 21:51:02 INFO mapred.JobClient:     HDFS_BYTES_WRITTEN=215
> 10/06/19 21:51:02 INFO mapred.JobClient:   Map-Reduce Framework
> 10/06/19 21:51:02 INFO mapred.JobClient:     Reduce input groups=8
> 10/06/19 21:51:02 INFO mapred.JobClient:     Combine output records=0
> 10/06/19 21:51:02 INFO mapred.JobClient:     Map input records=4
> 10/06/19 21:51:02 INFO mapred.JobClient:     Reduce shuffle bytes=112
> 10/06/19 21:51:02 INFO mapred.JobClient:     Reduce output records=0
> 10/06/19 21:51:02 INFO mapred.JobClient:     Spilled Records=16
> 10/06/19 21:51:02 INFO mapred.JobClient:     Map output bytes=72
> 10/06/19 21:51:02 INFO mapred.JobClient:     Map input bytes=96
> 10/06/19 21:51:02 INFO mapred.JobClient:     Combine input records=0
> 10/06/19 21:51:02 INFO mapred.JobClient:     Map output records=8
> 10/06/19 21:51:02 INFO mapred.JobClient:     Reduce input records=8
> Job Finished in 28.593 seconds
> java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable
decimal result.
> 	at java.math.BigDecimal.divide(BigDecimal.java:1603)
> 	at org.apache.hadoop.examples.PiEstimator.estimate(PiEstimator.java:313)
> 	at org.apache.hadoop.examples.PiEstimator.run(PiEstimator.java:342)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> 	at org.apache.hadoop.examples.PiEstimator.main(PiEstimator.java:351)
> 	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.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64)
> 	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)
> "hadoop jar hadoop-0.20.1+169.89-examples.jar pi 2 10" finishes fine

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