If you got following problem:
java.io.IOException: org.apache.hadoop.fs.FSError: java.io.IOException: No space left on device
This means that your space is running out. Usually the /tmp space
To make more space, one is to add /tmp's space
Or there is another option: Set hadoop.tmp.dir in conf/core-site.xml to /home/hadoop/tmp
That is the easiest way to extend the space
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