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From "Thanh Do (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1219) Data Loss due to edits log truncation
Date Thu, 17 Jun 2010 03:45:23 GMT
Data Loss due to edits log truncation
-------------------------------------

                 Key: HDFS-1219
                 URL: https://issues.apache.org/jira/browse/HDFS-1219
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 0.20.2
            Reporter: Thanh Do


We found this problem almost at the same time as HDFS developers.
Basically, the edits log is truncated before fsimage.ckpt is renamed to fsimage.
Hence, any crash happens after the truncation but before the renaming will lead
to a data loss. Detailed description can be found here:
https://issues.apache.org/jira/browse/HDFS-955

This bug was found by our Failure Testing Service framework:
http://www.eecs.berkeley.edu/Pubs/TechRpts/2010/EECS-2010-98.html
For questions, please email us: Thanh Do (thanhdo@cs.wisc.edu) and 
Haryadi Gunawi (haryadi@eecs.berkeley.edu

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