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I am very new to Hadoop. When I try to execute this command it says that the target already exists. How do I remove this file from hadoop? Is that the same as removing the target?
me$ hdfs -copyFromLocal myfile.txt input/myfile.txt
copyFromLocal: Target input/myfile.txt already exists
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What's on the Errors tab. Normally this error means there is either a permission issue or the DFS service isn't running. These folders do not currently exist on the server. However, this server had some issues and had to essentially be rebuilt. Demoted and repromoted (I am aware of best practice to NOT have DFS on a DC).
Stuck DFS metadata is a PIA to track down and clean up. I did it on the primary domain controller hoping AD replication would take care of it on the others. I cleaned metadata related to the Domain controller that had to be force removed.
If folder does not exist, please see if it still in AD: a. Open ADSIedit.msc. b. Connect to Default Naming Context (the domain name) Check if any removed information are still there. Delete them and try to recreate the namespace again. If you have any feedback on our support, please send to [email protected].
You don't have to remove the file first and then copy the new one. You can do it in one step by using the -f option with -copyFromLocal
hadoop fs -copyFromLocal -f myfile.txt input/myfile.txt
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