heritrix3
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fetchDNS lacks timeout option
Running a recent 3.3.0 snapshot, a harvest remains in the RUNNING state with 4 requests queued. These 4 requests relate to 2 domains. For each domain the dns request 'hangs'. Indeed, an nslookup requests for the given domains replies "*** Can't find firebaseio.com: No answer" So it appears that Heritrix needs to be able to timeout DNS requests.