[IMPALA-8119] Improve experience for configuring JVM heap size in docker container.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 3.2.0
• Fix Version/s: Impala 3.3.0
• Component/s: Infrastructure
• Labels: docker
• Target Version: Impala 3.3.0
• Epic Color: ghx-label-5
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 25/Jan/19 19:04
• Updated: 26/Apr/19 06:23
• Resolved: 26/Apr/19 06:23

Description

The heap size can be configured via JAVA_TOOL_OPTIONS. Configuring the JVM heap size is likely a common task when deploying Impala containers to production because the catalogd and coordinators need to be sized to fit the working set of metadata - it would be worthwhile to have a more explicit and clearly-documented way to set the heap size.

We could also try to be fancy and choose a heap size based on the container memory limit and the role of the container.