[IMPALA-3897] Codegen null-aware constant in PHJ::ProcessBuildBatch()

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.7.0
• Fix Version/s: Impala 2.11.0
• Component/s: Backend
• Labels: codegen ramp-up
• Target Version: Product Backlog
• Assignee: Anuj Phadke
• Reporter: Tim Armstrong
• Created: 22/Jul/16 16:17
• Updated: 21/Sep/17 18:01
• Resolved: 21/Sep/17 18:01

Description

We should codegen out this branch in the hash join node. The branch itself is probably pretty cheap, but it will reduce codegen time by removing the dead code inside the branch for almost all join modes.

      if (null_aware_partition_ != NULL) {
        // TODO: remove with codegen/template