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HDFS temporary file locations
Is there any convention for clients/applications wishing to use temporary file space in HDFS?  For example, my application wants to:

1)      Load data into some temporary space in HDFS as an external client

2)      Run an AM, which produces HDFS output (also in the temporary space)

3)      Read the data out of the HDFS temporary space

4)      Remove the temporary files