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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3656) ZKFC may write a null "breadcrumb" znode
Date Fri, 13 Jul 2012 21:46:35 GMT
Todd Lipcon created HDFS-3656:

             Summary: ZKFC may write a null "breadcrumb" znode
                 Key: HDFS-3656
                 URL: https://issues.apache.org/jira/browse/HDFS-3656
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: auto-failover
    Affects Versions: 2.0.0-alpha
            Reporter: Todd Lipcon

A user [reported|https://issues.cloudera.org/browse/DISTRO-412] an NPE trying to read the
"breadcrumb" znode in the failover controller. This happened repeatedly, implying that an
earlier process set the znode to null - probably some race, though I don't see anything obvious
in the code.

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