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https://issues.apache.org/jira/browse/HADOOP-5597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694668#action_12694668
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Suman Sehgal commented on HADOOP-5597:
--------------------------------------
This issue poped up while executing following command
java -cp <classpath> org.apache.hadoop.hdfs.NNBench -operation create_write
-maps <no. of maps> -startTime <current time>+120 (in seconds) -numberOfFiles
<no of files> -blockSize <blocks per file> -bytesToWrite <bytes per block>
-bytesPerChecksum <blocks per file>
where no. of maps= 1.5 times of cluster size
bytesToWrite=20
numberOfFiles=cluster size
and default values are being used for blockSize and bytesPerChecksum (which is
1).
Environment:
==========
20 Nodes Cluster
500 Nodes Cluster
Hadoop Version : 0.20.0 (with fairshare Scheduler)
> 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
>
> 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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