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https://issues.apache.org/jira/browse/HDFS-1783?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lars Hofhansl updated HDFS-1783:
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Attachment: HDFS-1783-trunk.patch
Sketch of a patch (mostly just an adaption of Dhrubas change).
Only tested whether it compiles so far.
Will do some testing and add unit tests soon.
Using this may eat your first born so use at your own risk.
> Ability for HDFS client to write replicas in parallel
> -----------------------------------------------------
>
> Key: HDFS-1783
> URL: https://issues.apache.org/jira/browse/HDFS-1783
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Reporter: dhruba borthakur
> Assignee: Lars Hofhansl
> Attachments: HDFS-1783-trunk.patch
>
>
> The current implementation of HDFS pipelines the writes to the three
> replicas. This introduces some latency for realtime latency sensitive
> applications. An alternate implementation that allows the client to write all
> replicas in parallel gives much better response times to these applications.
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