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Posted to common-issues@hadoop.apache.org by "Robert Chansler (JIRA)" <ji...@apache.org> on 2009/10/09 06:21:31 UTC
[jira] Updated: (HADOOP-6017) NameNode and SecondaryNameNode fail
to restart because of abnormal filenames.
[ https://issues.apache.org/jira/browse/HADOOP-6017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Chansler updated HADOOP-6017:
------------------------------------
Release Note: (was: rename to a file name with certain characters can cause fatal exceptions in NameNode initialization and Secondary NameNode.)
Editorial pass over all release notes prior to publication of 0.21. Bug.
> NameNode and SecondaryNameNode fail to restart because of abnormal filenames.
> -----------------------------------------------------------------------------
>
> Key: HADOOP-6017
> URL: https://issues.apache.org/jira/browse/HADOOP-6017
> Project: Hadoop Common
> 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, HADOOP-6017-branch-20.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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