[jira] Created: (HDFS-1222) NameNode fail stop in spite of multiple metadata directories

["Thanh Do (JIRA)" <ji...@apache.org>]

NameNode fail stop in spite of multiple metadata directories
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                 Key: HDFS-1222
                 URL: https://issues.apache.org/jira/browse/HDFS-1222
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 0.20.1
            Reporter: Thanh Do


Despite the ability to configure multiple name directories
(to store fsimage) and edits directories, the NameNode will fail stop 
in most of the time it faces exception when accessing to these directories.
 
NameNode fail stops if an exception happens when loading fsimage,
reading fstime, loading edits log, writing fsimage.ckpt ..., although there 
are still good replicas. NameNode could have tried to work with other replicas,
and marked the faulty one.

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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