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From Ariel Valentin <>
Subject DNS Failures
Date Sun, 09 Nov 2014 19:52:00 GMT
We have a very peculiar situation, where a DNS failure is causing our
application to hang.

Based on the trace debugging logs it appears that the ThriftScanner
encounters a TTransportException, which was caused by an
UnknownHostException. It seems to then retry a few seconds later.

After tracing the code a bit I realized that we could mitigate the
"hanging" by setting a timeout on our scans/writes however I would prefer
that the client would fail faster if it could not resolve the hostnames of
the TServers it found in zookeeper.

Thoughts? Concerns? Opinions?

Ariel Valentin
skype: ariel.s.valentin
twitter: arielvalentin
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