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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7120) When aborting NameNode or JournalNode due to metadata file problems, write the contents of the metadata directories and permissions to logs.
Date Mon, 22 Sep 2014 18:04:41 GMT
Chris Nauroth created HDFS-7120:
-----------------------------------

             Summary: When aborting NameNode or JournalNode due to metadata file problems,
write the contents of the metadata directories and permissions to logs.
                 Key: HDFS-7120
                 URL: https://issues.apache.org/jira/browse/HDFS-7120
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: journal-node, namenode
            Reporter: Chris Nauroth
            Assignee: Chris Nauroth


If the NameNode or JournalNode aborts due to an unexpected error in the metadata directories,
often the root cause is that the metadata files are in an unexpected state, or permissions
are broken on the directories.  This issue proposes that during abort, we write additional
information about the directory state and permissions to the logs.  This can help speed up
diagnosis, and ultimately recovery.



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