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Clear YARN usercache?


Running the CDH 5.3.0 Quickstart VM; submitted a MR job and it was just sitting in YARN with no indication of progress.




Cloudera Manager shows lots of systems with log out of space errors so I looked through the filesystem for where I could free up space; found what appears to be excessive usage in the YARN usercache folder (6 GB in use).


File location is:



Can I just delete the cache manually or is there a better way?  Is there a way to configure YARN to use less space?





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