[IMPALA-5661] Consider allowing configuration of buffer pool size

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.10.0
• Fix Version/s: Impala 2.10.0
• Component/s: Backend
• Labels: resource-management
• Target Version: Impala 2.10.0
• Epic Color: ghx-label-7
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 13/Jul/17 20:37
• Updated: 08/Aug/17 15:11
• Resolved: 08/Aug/17 15:11

Description

Currently the buffer pool size is hard-coded to be 80% of the process memory limit. We expect that this is a reasonable default but it may be useful to add a safety value command line argument to allow control over this.

E.g.
--buffer_pool_limit=80% would be the default, and it could be set to values like --buffer_pool_size=70% or --buffer_pool_size=40g