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From "Sean Busbey (JIRA)" <>
Subject [jira] [Created] (ACCUMULO-2224) ZooSession should be more robust to transient DNS issues
Date Mon, 20 Jan 2014 17:32:19 GMT
Sean Busbey created ACCUMULO-2224:

             Summary: ZooSession should be more robust to transient DNS issues
                 Key: ACCUMULO-2224
             Project: Accumulo
          Issue Type: Bug
          Components: client
    Affects Versions: 1.5.0, 1.4.4, 1.4.3, 1.4.2, 1.4.1
         Environment: 1.4.5-SNAP on CDH4 w/gremlins
            Reporter: Sean Busbey
            Assignee: Sean Busbey
             Fix For: 1.4.5, 1.5.1, 1.6.0

While injecting network faults, I found that transient DNS problems caused us to bail out
of ZooSessions rather than retrying as we do for all other IO problems. We should retry these
failures just as we do for Connection Refused or other networking problems.

Since the addition of ACCUMULO-131, we can be sure that we won't retry actual invalid hosts
for ever. Instead, after the time out period that holds for all other problems we'll properly

The warn messages logged for IOExceptions should suffice to indicate improperly specified
host names.

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