From: Ryan LeCompte
Sent: Thursday, December 10, 2009 1:45 PM
To: [email protected]
Subject: Hive not using the full mapper capacity for certain jobs
The cluster has a capacity of 28 concurrent mappers. It looks like on larger tables Hive will use all 28 mappers, but on a smaller table it only uses 4 mappers maximum. Any idea how to override this?