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https://issues.apache.org/jira/browse/HDFS-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050953#comment-13050953
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Dominic Dunlop commented on HDFS-442:
-------------------------------------
To avoid having to diddle with the source, you can set the property value from
the command line:
hadoop jar hadoop-0.20.2-test.jar dfsthroughput
-Dmapred.temp.dir='/var/lib/hadoop-0.20/cache/${user.name}'
or similar.
> dfsthroughput in test.jar throws NPE
> ------------------------------------
>
> Key: HDFS-442
> URL: https://issues.apache.org/jira/browse/HDFS-442
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 0.20.1
> Reporter: Ramya R
> Priority: Minor
>
> On running hadoop jar hadoop-test.jar dfsthroughput OR hadoop
> org.apache.hadoop.hdfs.BenchmarkThroughput, we get NullPointerException.
> Below is the stacktrace:
> {noformat}
> Exception in thread "main" java.lang.NullPointerException
> at java.util.Hashtable.put(Hashtable.java:394)
> at java.util.Properties.setProperty(Properties.java:143)
> at java.lang.System.setProperty(System.java:731)
> at
> org.apache.hadoop.hdfs.BenchmarkThroughput.run(BenchmarkThroughput.java:198)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at
> org.apache.hadoop.hdfs.BenchmarkThroughput.main(BenchmarkThroughput.java:229)
> {noformat}
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