[IMPALA-13376] Slight documentation mistake for AGG_MEM_CORRELATION_FACTOR

• Type: Documentation
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.4.0
• Fix Version/s: Impala 4.5.0
• Component/s: Docs
• Target Version: Impala 4.5.0
• Epic Color: ghx-label-1
• Assignee: Riza Suminto
• Reporter: Riza Suminto
• Created: 12/Sep/24 00:47
• Updated: 24/Sep/24 17:27
• Resolved: 24/Sep/24 17:11

Description

IMPALA-12548 fix behavior of AGG_MEM_CORRELATION_FACTOR. Higher value will lower memory estimation, while lower value will result in higher memory estimation. The documentation in ImpalaService.thrift, however, says the opposite.

  // Setting value 1.0 will result in an equal memory estimate as the default estimation
  // (no change). Defaults to 0.5. 

AGG_MEM_CORRELATION_FACTOR was also never documented.