Tez is the next generation Hadoop Query Processing framework written on top of YARN.
Tez AM is a new and improved implementation of the MapReduce application that supports container reuse. This allows jobs to run faster on clusters that have limited resources per job. On smaller clusters, it reduces the time for a job to finish by efficiently using a container to run more than one task.
The Tez AMPoolService or Tez Service is a service that launches and makes available a pool of pre-launched MapReduce AMs ( Tez AMs ). These AMs in the pool can, in turn, be configured to pre-allocate a number of containers to allow jobs to be launched and completed faster. To use the Tez Service, the clients must submit the jobs to this service instead of the ResourceManager.
Use the instructions provided here to submit Hive queries to Tez Service.
