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https://issues.apache.org/jira/browse/HADOOP-3185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-3185:
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Component/s: dfs
> DFSClient should track failures by block rather than globally
> -------------------------------------------------------------
>
> Key: HADOOP-3185
> URL: https://issues.apache.org/jira/browse/HADOOP-3185
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> 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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