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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-1798) saveNamespace should background the writing of the FSImage files when in SafeMode
Date Thu, 31 Mar 2011 01:39:05 GMT
saveNamespace should background the writing of the FSImage files when in SafeMode
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                 Key: HDFS-1798
                 URL: https://issues.apache.org/jira/browse/HDFS-1798
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Matt Foley


Even with parallel writes of the FSImage files (HDFS-1071), large clusters still typically
spend 5 minutes writing the files.  When in SafeMode, it should be safe to background these
writes instead of waiting for them.  To enable this, the namenode must be prevented from leaving
SafeMode until the writes are done.

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