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https://issues.apache.org/jira/browse/HDFS-1528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12966996#action_12966996
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Faraz Ahmad commented on HDFS-1528:
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A quick work around which keeps file system intact is :
1. Create an empty directory on hdfs.
2. Then upload the input file.
> First uploaded file replaces /home/hadoop directory
> ---------------------------------------------------
>
> Key: HDFS-1528
> URL: https://issues.apache.org/jira/browse/HDFS-1528
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.20.2
> Environment: distributed file system
> Reporter: Faraz Ahmad
>
> This bug shows up in the following scenario:
> 1. There is no input data on HDFS (i.e., it has been formatted recently).
> 2. Upload any single file (not directory of files) e.g., build.xml.
> 3. The original directory /user/hadoop on hdfs will change itself from
> directory to a file and its contents will contain the contents of the
> uploaded file.
> 4. Now HDFS will have a single file /user/hadoop.
> 5. HDFS filesystem gets corrupted and we cannot upload any more files or
> directories.
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