Github user linqer commented on the issue:

    https://github.com/apache/carbondata/pull/1234
  
    Please note that: In addition to solving the bug " DECIMAL precision must 
be in range ", another modification has been made, there is one bit 
incompatible: 
    
    1. When converting carbondata type to presto type,  if the type is 
uncertain, original code will convert it to the Presto String type. Now an 
Unsupport exception will be throw out, 
    ( CarbondataMetadata.CarbondataType2SpiMapper is changed to  
CarbondataType.getSpiType)
    
    2. When converting presto type to carbondata type,  if the type is 
uncertain, original code will convert it to the Carbon String type. Now an 
Unsupport exception will be throw out,
    (CarbondataRecordSetProvider.Spi2CarbondataTypeMapper  is changed to 
CarbondataType.toCarbonType)



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