[KNOX-2701] Knox topology for Impala includes non-coordinator hosts

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 2.0.0
• Component/s: Server
• Assignee: Sandor Molnar
• Reporter: Sandor Molnar
• Created: 11/Jan/22 14:34
• Updated: 12/Jan/22 15:07
• Resolved: 12/Jan/22 15:07

Description

Currently, all impala daemons are included in the Knox topology when only Impala coordinator daemons should be included.  Impala daemons can be of 3 types:

• COORDINATOR_ONLY
• EXECUTOR_ONLY
• NO_SPECIALIZATION (acts as both coordinator and executor)

The type of a given impalad is specified by the CM config "impalad_specialization". Only impala daemons with type COORDINATOR_ONLY or NO_SPECIALIZATION should be included in the Knox topology when discovering a CM cluster.

Issue Links

• links to: GitHub Pull Request #529