title: How to use crc32 function in hive?
body: <p>I am a newbie to hive and exploring collections and hashing.
  I came across the crc32 function in HiveUDF page, but when trying to query it , it returns me a "invalid function" error.</p>
  
  <p>Any pointers?</p>
  
  <p>I have previously implemented crc32 in java and am completely aware of hashing concepts and usage. This is more in regards to whether hive has an inbuilt crc32 function and how to use it in a hive query.</p>
  
  <p>Regards,</p>