I did a test for this. If a NaN is inserted into a string column, the value is serialized as "Infinity" in HDFS. However, if it's inserted into an Integer column, it's serialized as 2147483647 or -2147483648 depending on whether the output is +infinity or -infinity.
Mark ----- Original Message ----- From: "Nanda Vijaydev" <nanda.vijay...@gmail.com> To: user@hive.apache.org Sent: Thursday, May 17, 2012 8:10:45 PM Subject: Re: NaNs and Infinity support in HIVE? Can you paste a sample line of your data on HDFS and which column you are trying to query? Thanks Nanda Vijaydev On Mon, May 14, 2012 at 11:40 AM, Sukhendu Chakraborty < sukhendu.chakrabo...@gmail.com > wrote: Are NaNs and/or Infinity supported in HIVE? If yes, I wanted to know how are NaNs and Infinity values represented in HDFS files to be interpreted correctly in Hive. When I do 'select 1/0 from tab', I get a text value, "Infinity". However, when I enter "Infinity" v in my HDFS file represented by the HIVE table (the column datatype of the table is int), and then do a select, I get 'NULL' (and not Infinity). I am working with HIVE 0.7.1. Thanks, -Sukhendu
