[HIVE-9602] Hive on Tez : Launch an application master only when needed

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.14.0
• Component/s: CLI
• Assignee: Siddharth Seth
• Reporter: Mostafa Mokhtar
• Created: 06/Feb/15 22:02
• Updated: 06/Feb/15 22:02

Description

When all Yarn containers are busy a new Hive CLI session with Tez set as the execution engine won't start as it attempts to allocate a container for the AM.

The request is to launch an AM only when needed.

Analysts log into hive using CLI, write queries , check the schema analyze explain etc.. then launch a query, with the current model they are blocked from doing if the queue is full or if all containers are busy.