hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mahadev konar (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3112) Distcp fails with null pointer exception.
Date Thu, 27 Mar 2008 22:32:24 GMT
Distcp fails with null pointer exception.

                 Key: HADOOP-3112
                 URL: https://issues.apache.org/jira/browse/HADOOP-3112
             Project: Hadoop Core
          Issue Type: Bug
            Reporter: Mahadev konar
            Assignee: Robert Chansler
            Priority: Blocker
             Fix For: 0.17.0

Copy failed: java.lang.NullPointerException
        at org.apache.hadoop.io.serializer.SerializationFactory.<init>(SerializationFactory.java:52)
        at org.apache.hadoop.io.SequenceFile$Writer.init(SequenceFile.java:910)
        at org.apache.hadoop.io.SequenceFile$Writer.<init>(SequenceFile.java:846)
        at org.apache.hadoop.io.SequenceFile.createWriter(SequenceFile.java:394)
        at org.apache.hadoop.io.SequenceFile.createWriter(SequenceFile.java:285)
        at org.apache.hadoop.util.CopyFiles.setup(CopyFiles.java:743)
        at org.apache.hadoop.util.CopyFiles.copy(CopyFiles.java:520)
        at org.apache.hadoop.util.CopyFiles.run(CopyFiles.java:591)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.util.CopyFiles.main(CopyFiles.java:607)

this is the null pointer exception you get when using 0.17 to distcp.

i was running using hod 
with hadoop --config hoddir distcp .....................
After investigating further with help from chris, we found out that it is using conf.getStrings
which does not have a default. Also, hadoop default conf directory is not added to the classpath
 when we run bin/hadoop on the client side. 
On copying hadoop-default.xml to my config directory it worked fine. 

we can add hadoop default conf directory to the classpath? or allow use a default in the call
for io.serializations?

I am marking this as a blocker for someone to take a look. 

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message