[IMPALA-3619] Disable LLVM IR debug symbols by default

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 2.6.0
• Fix Version/s: Impala 2.6.0
• Component/s: Backend
• Labels: codegen resource-management
• Target Version: Impala 2.6.0
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 26/May/16 00:13
• Updated: 26/May/16 20:22
• Resolved: 26/May/16 20:22

Description

In 2.6 we enabled debug symbols for LLVM IR for the debug builds. However, this comes with significant memory overhead because we have many copies of the parsed symbols in memory.

We should disable this by default, and leave it as an option for developers.