[KUDU-3294] ksck and rebalancer tools are useless if they can't resolve any of the tserver addresses

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: ops-tooling
• Assignee: Andrew Wong
• Reporter: Andrew Wong
• Created: 16/Jun/21 05:00
• Updated: 16/Jun/21 05:01

Description

One of the first steps we perform when running ksck or the rebalancer tool is resolve the addresses of all tablet servers to initialize the proxies that will be used by each tool. If this step fails, the tool returns early, resulting in pitifully barren output along the lines of "an empty cluster", or simply a report that contains no tables, and not much to debug with other than a complaint like the following:

Network error: error fetching the cluster metadata from the leader master: unable to resolve address for <tserver>: Name or service not known 

At worst, we should just skip over the tablet server and treat it as failed in the report.