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From "Eli Collins (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7991) HA: the FailoverController should check the standby is ready before failing over
Date Wed, 25 Jan 2012 02:48:41 GMT
HA: the FailoverController should check the standby is ready before failing over
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                 Key: HADOOP-7991
                 URL: https://issues.apache.org/jira/browse/HADOOP-7991
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: ha
    Affects Versions: HA Branch (HDFS-1623)
            Reporter: Eli Collins
            Assignee: Eli Collins


The FC in preFailoverChecks should check that the target service is ready for failover (eg
in the case of HDFS, that it's not in SM) before failing over to it. We'll need to provide
a force option as well since the standby may not actually be ready until the failover has
been initiated (eg because becoming active kicks it to check the log and see newly allocated
blocks).

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