This is spammy and not very useful nor actionable.
We should change the log level for these to 2/3 here
Also, the message should probably get a little work to make it clear this is reverse dns/resolution for the ip addresses.
HostnameCanonicalizationWorker] Failed to obtain name info for: [ (10.4.126.58, "nodename nor servname provided, or not known"), (10.4.126.58, "nodename nor servname provided, or not known") ]