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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-445) pread() fails when cached block locations are no longer valid
Date Wed, 24 Jun 2009 22:25:07 GMT
pread() fails when cached block locations are no longer valid
-------------------------------------------------------------

                 Key: HDFS-445
                 URL: https://issues.apache.org/jira/browse/HDFS-445
             Project: HDFS
          Issue Type: Bug
            Reporter: Kan Zhang
            Assignee: Kan Zhang


when cached block locations are no longer valid (e.g., datanodes restart on different ports),
pread() will fail, whereas normal read() still succeeds through re-fetching of block locations
from namenode (up to a max number of times). 

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