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From "Greg Poirier (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-442) dfsthroughput in test.jar throws NPE
Date Sun, 06 Mar 2011 22:58:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13003222#comment-13003222
] 

Greg Poirier commented on HDFS-442:
-----------------------------------

This can be fixed by modifying src/test/org/apache/hadoop/hdfs/BenchmarkThroughput.java:198

From:

198     String localDir = conf.get("mapred.temp.dir");
199     dir = new LocalDirAllocator("mapred.temp.dir");

To:

198     String localDir = conf.get("hadoop.tmp.dir");
199     dir = new LocalDirAllocator("hadoop.tmp.dir");

It looks as though this has been removed from subversion trunk though... but it still exists
in 0.20.2/3, which I'm running currently.

> 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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