title: Weird float number from sqlserver jdbc river in ElasticSearch
body: <p>I have a SQLServer Database and when I import a float type, it's import an incorrect values:</p>
  
  <p>DB value: 9.0
  ES value: 90.0</p>
  
  <p>DB Value: 16.00
  ES value: 16000000000000004</p>
  
  <p>I have setup a mapping for the value to float type and set the scale:2 parameter in river config without success. </p>