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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3185) DFSClient should track failures by block rather than globally
Date Fri, 04 Apr 2008 23:40:24 GMT
DFSClient should track failures by block rather than globally
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                 Key: HADOOP-3185
                 URL: https://issues.apache.org/jira/browse/HADOOP-3185
             Project: Hadoop Core
          Issue Type: Improvement
            Reporter: Chris Douglas
             Fix For: 0.18.0


Rather than tracking the total number of times DFSInputStream failed to locate a datanode
for a particular block, such failures and the the list of datanodes involved should be scoped
to individual blocks. In particular, the "deadnode" list should be a map of blocks to a list
of failed nodes, the latter reset and the nodes retried per the existing semantics.

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