[KUDU-2964] Summarize output when GetFlags returns InvalidArgument

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.11.0
• Fix Version/s: 1.12.0
• Component/s: ksck
• Labels: newbie
• Code Review: https://gerrit.cloudera.org/c/14460/
• Assignee: Bankim Bhavsar
• Reporter: Adar Dembo
• Created: 08/Oct/19 04:47
• Updated: 21/Oct/19 04:26
• Resolved: 21/Oct/19 04:26

Description

If running a new ksck against a cluster that doesn't support GetFlags RPC calls, the output looks something like this:

...
unable to get flag information for tablet server c3f2cbaee6bf495894fb94cbeb691111 (004.mydomain.local:7050): Invalid argument: Call on service kudu.server.GenericService received at 172.22.152.35:7050 from 172.22.152.225:43560 with an invalid method name: GetFlags
unable to get flag information for tablet server f21b89d724714c5aba893ff305f5bb1e (068.mydomain.local:7050): Invalid argument: Call on service kudu.server.GenericService received at 172.22.152.99:7050 from 172.22.152.225:42872 with an invalid method name: GetFlags
unable to get flag information for tablet server f2819966d33d4f7ea0be9e80e6668c93 (059.mydomain.local:7050): Invalid argument: Call on service kudu.server.GenericService received at 172.22.152.90:7050 from 172.22.152.225:56270 with an invalid method name: GetFlags
tserver flag check error: 93 of 93 tservers' flags were not available

It'd be nicer if we just summarized the unavailability (or throttled the responses) to avoid the spew.