[IMPALA-6445] Whitespace should be stripped or detected in kudu master addresses metadata

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 2.12.0
• Component/s: Frontend
• Epic Color: ghx-label-4
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 25/Jan/18 19:58
• Updated: 21/Dec/20 17:40
• Resolved: 21/Dec/20 17:40

Description

Currently the kudu master list metadata is split on ',' and directly fed through to Kudu. This means that if a user specifies a list such as "m1, m2, m3" with spaces after the commas, it will pass those hosts on to Kudu as "m1", " m2", and " m3". Two of those three hostnames are of course invalid and Kudu will only be able to connect when m1 is the active master.

We should either strip those spaces or detect this case and throw an error on the bad metadata. (I prefer stripping)