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POHow can I concatenate two files in hadoop into one using Hadoop FS shell?
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2012-05-15T19:43:48.110
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2014-11-03T19:17:14.477
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I am working with Hadoop 0.20.2 and would like to concatenate two files into one using the -cat shell command if possible (source: <a href="http://hadoop.apache.org/common/docs/r0.19.2/hdfs_shell.html" rel="nofollow">http://hadoop.apache.org/common/docs/r0.19.2/hdfs_shell.html</a>) Here is the command I'm submitting (names have been changed): <pre><code>**/path/path/path/hadoop-0.20.2> bin/hadoop fs -cat /user/username/folder/csv1.csv /user/username/folder/csv2.csv > /user/username/folder/outputdirectory/** </code></pre> It returns bash: /user/username/folder/outputdirectory/: No such file or directory I also tried creating that directory and then running it again -- i still got the 'no such file or directory' error. I have also tried using the -cp command to copy both into a new folder and -getmerge to combine them but have no luck with the getmerge either. The reason for doing this in hadoop is that the files are massive and would take a long time to download, merge, and re-upload outside of hadoop.
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<shell><hadoop><concatenation>
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How can I concatenate two files in hadoop into one using Hadoop FS shell?
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