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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1042) Namesystem metrics are collected before namesystem is fully initialized
Date Wed, 17 Mar 2010 22:57:27 GMT
Namesystem metrics are collected before namesystem is fully initialized
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                 Key: HDFS-1042
                 URL: https://issues.apache.org/jira/browse/HDFS-1042
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 0.20.2, 0.21.0, 0.22.0
            Reporter: Todd Lipcon


FSNamesystem leaks its reference out to the metrics system before it has initialized FSDirectory.
Therefore in rare occasions you can get NPEs when metrics try to collect data from FSN before
it's initialized.

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