Github user srowen commented on the pull request:

    https://github.com/apache/spark/pull/4178#issuecomment-74555104
  
    @prabeesh this looks like it's waiting on a change to address the comment 
from @dragos - no need to catch and log the exception - and to the issue of 
infinite looping if the queue is full. I think it needs at least a warning that 
this is occurring. Yes it's an example that a 'real' deployment would have to 
change anyway, but I think it's worth showing good practice. Right now the 
error is always swallowed.


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