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https://issues.apache.org/jira/browse/HADOOP-5597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715313#action_12715313
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Boris Shkolnik commented on HADOOP-5597:
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Tried to run it on 5 nodes and 20 nodes cluster. The only time when it failed -
was when I specified a wrong config. Since creating control files is the first
access to HDFS it would fail there if it was trying to access a wrong NameNode
(for example default, because config points to a wrong place).
My conclusion - it is possible that the failure was result of running with
wrong config.
If you run into this again - please attache NameNode logs and specify exact
configuration.
Meanwhile closing the bug.
> create_write operation of nnbench is failing.
> ---------------------------------------------
>
> Key: HADOOP-5597
> URL: https://issues.apache.org/jira/browse/HADOOP-5597
> Project: Hadoop Core
> Issue Type: Bug
> Components: test
> Affects Versions: 0.20.0
> Reporter: Suman Sehgal
> Assignee: Ravi Phulari
>
> create_write operation of nnbench (org.apache.hadoop.hdfs.NNBench) is not
> able to create control file. It is failing and displaying following error
> message:
> Exception in thread "main" java.io.IOException: Mkdirs failed to create
> /<specified-path>/output/control
> at org.apache.hadoop.hdfs.NNBench.createControlFiles(NNBench.java:154)
> at org.apache.hadoop.hdfs.NNBench.main(NNBench.java:577)
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