Concatenating multiple text files into one very large file in HDFS
<p>I have the multiple text files. 
The total size of them exceeds the largest disk size available to me (~1.5TB)</p>

<p>A spark program reads a single input text file from HDFS. So I need to combine those files into one. (I cannot re-write the program code. I am given only the *.jar file for execution)</p>

<p>Does HDFS have such a capability? How can I achieve this?</p>