[jira] Updated: (HADOOP-6017) NameNode and SecondaryNameNode fail to restart because of abnormal filenames.

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-6017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE updated HADOOP-6017:
-------------------------------------------

    Attachment: 6017_20090611.patch

6017_20090611.patch: we should not use String.replaceFirst(..) at all.

> NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
> -----------------------------------------------------------------------------
>
>                 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
>
>         Attachments: 6017_20090611.patch
>
>
> 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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