HA: On transition to active, standby should not swallow ELIE
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                 Key: HDFS-2772
                 URL: https://issues.apache.org/jira/browse/HDFS-2772
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha, name-node
    Affects Versions: HA branch (HDFS-1623)
            Reporter: Aaron T. Myers
            Assignee: Aaron T. Myers


EditLogTailer#doTailEdits currently catches, logs, and swallows 
EditLogInputException. This is fine in the case when the standby is sitting 
idly behind tailing logs. However, when the standby is transitioning to active, 
swallowing this exception is incorrect, since it could cause the standby to 
silently fail to load all the edits before becoming active.

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