leventov opened a new issue #4888: How Druid should handle situation when 
string dimension column is queried as numeric?
URL: https://github.com/apache/incubator-druid/issues/4888
 
 
   1. Consider values are zeros, do _not_ try to parse string values. Seems 
this is the current behaviour
   2. Try to parse string values, fail with error if they are not parseable, or 
null, or multiple-value
   3. Try to parse string values, and consider values are zero if they are not 
parseable, or null, or multiple-value
   4. Do not try to parse, always fail with error
   
   How this behaviour is chosen?
   1. Not chosen, always the same (current)
   2. Chosen on the query level
   3. Could be set in the node configurations

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