Month: March 2016

This article explains one of the possible reasons caused Hive dynamic insert query to only use one reducer to do the job, out of thousands of other reducers which do no job at all. See the below Hive query that triggers dynamic partitioning insert: This query will create thousands of …

This article explains how to rename a database in Hive manually without modifying database locations, as the command: still does not work due to HIVE-4847 is not fixed yet. For the DB rename to work properly, we need to update three tables in the HMS DB. As I am using …