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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6017) NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
Date Fri, 12 Jun 2009 01:30:07 GMT
NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
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                 Key: HADOOP-6017
                 URL: https://issues.apache.org/jira/browse/HADOOP-6017
             Project: Hadoop Core
          Issue Type: Bug
    Affects Versions: 0.18.3
            Reporter: Raghu Angadi
            Assignee: Tsz Wo (Nicholas), SZE
            Priority: Blocker
             Fix For: 0.18.4, 0.19.2, 0.20.1, 0.21.0



SecondaryNameNode (and NameNode) fail to load the edits log.  I will include stack trace in
next comment.

This is traced to the fact that LeaseManager uses {{String.relaceFirst()}} to replace front
of a sting with another string. Unfortunately {{replaceFirst()}} uses regex, though the first
argument is {{quoted}} by the code, the second argument is not. (the second arg is not really
treated as regex but still gets processed for back references (as in '{{sed s/first/second/g}}')

As Nicholas suggested, it is just simpler to use {{substring()}} to replace part of the string.

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