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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6017) NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
Date Fri, 12 Jun 2009 18:58:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718940#action_12718940

Tsz Wo (Nicholas), SZE commented on HADOOP-6017:

I ran unit tests on trunk with 6017_20090611b.patch.  The only failed test was TestReduceFetch,
which seemed unrelated.  Then, I ran TestReduceFetch on a clean trunk.  It also failed in
both my linux and windows machines.

> 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, 6017_20090611b.patch, HADOOP-6017-branch-18.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
> As Nicholas suggested, it is just simpler to use {{substring()}} to replace part of the

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