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From "Suman Sehgal (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5535) open_read operation of NNbench is not working.
Date Thu, 19 Mar 2009 10:47:50 GMT
open_read operation of NNbench is not working.
----------------------------------------------

                 Key: HADOOP-5535
                 URL: https://issues.apache.org/jira/browse/HADOOP-5535
             Project: Hadoop Core
          Issue Type: Bug
          Components: test
    Affects Versions: 0.20.0
            Reporter: Suman Sehgal


NNBench's open_read operation is not working.
On giving command "bin/hadoop  hadoop-0.20.1-dev-test.jar nnbench -operation open_read", 
following error message is displayed :

java.lang.ArithmeticException: / by zero
        at org.apache.hadoop.hdfs.NNBench.analyzeResults(NNBench.java:376)
        at org.apache.hadoop.hdfs.NNBench.main(NNBench.java:583)
        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.test.AllTestDriver.main(AllTestDriver.java:81)
        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)

map and reduce phases get completed and error comes while computing average execution time.

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