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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4609) Some log message of INFO level seems unuseful.
Date Fri, 07 Nov 2008 01:17:44 GMT
Some log message of INFO level seems unuseful.
----------------------------------------------

                 Key: HADOOP-4609
                 URL: https://issues.apache.org/jira/browse/HADOOP-4609
             Project: Hadoop Core
          Issue Type: Improvement
          Components: examples
    Affects Versions: 0.18.2
            Reporter: Edward J. Yoon
             Fix For: 0.18.3


When I tried to run a PIEstimator, I recieved a below log message of INFO level.
Should we throw it to user?

----
08/11/07 10:12:05 INFO fs.FSInputChecker: java.io.IOException: Checksum ok was sent and should
not be sent again
        at org.apache.hadoop.dfs.DFSClient$BlockReader.read(DFSClient.java:863)
        at org.apache.hadoop.dfs.DFSClient$DFSInputStream.readBuffer(DFSClient.java:1392)
        at org.apache.hadoop.dfs.DFSClient$DFSInputStream.read(DFSClient.java:1428)
        at java.io.DataInputStream.readFully(DataInputStream.java:178)
        at org.apache.hadoop.io.DataOutputBuffer$Buffer.write(DataOutputBuffer.java:64)
        at org.apache.hadoop.io.DataOutputBuffer.write(DataOutputBuffer.java:102)
        at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1933)
        at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1833)
        at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1879)
        at org.apache.hadoop.examples.PiEstimator.launch(PiEstimator.java:220)
        at org.apache.hadoop.examples.PiEstimator.run(PiEstimator.java:245)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.examples.PiEstimator.main(PiEstimator.java:252)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
        at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:141)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:54)
        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:54)
        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:68)

Estimated value of PI is 3.0
hadoop@vldb ~/hadoop $ 


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