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https://issues.apache.org/jira/browse/HDFS-8955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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bijaya updated HDFS-8955:
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Affects Version/s: (was: 3.0.0)
2.6.0
> Support 'hedged' write in DFSClient
> -----------------------------------
>
> Key: HDFS-8955
> URL: https://issues.apache.org/jira/browse/HDFS-8955
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Affects Versions: 2.6.0
> Reporter: bijaya
> Assignee: bijaya
>
> We do have hedged read which serves redundancy on read failures due to bad
> sector/patch in disk. We need to have similar feature for hdfs write. This
> feature may come with cost but its something to must have for use case which
> needs to guarantee write success regardless of degraded disk health.
> Defination of degraded disk is highly debatable but this is what I would
> define. "Degraded disk is the disk which fails to read and write
> intermittently"
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