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https://issues.apache.org/jira/browse/HADOOP-2154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doug Cutting updated HADOOP-2154:
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Fix Version/s: 0.18.0
> Non-interleaved checksums would optimize block transfers.
> ---------------------------------------------------------
>
> Key: HADOOP-2154
> URL: https://issues.apache.org/jira/browse/HADOOP-2154
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Affects Versions: 0.14.0
> Reporter: Konstantin Shvachko
> Assignee: Raghu Angadi
> Fix For: 0.18.0
>
>
> Currently when a block is transfered to a data-node the client interleaves
> data chunks with the respective checksums.
> This requires creating an extra copy of the original data in a new buffer
> interleaved with the crcs.
> We can avoid extra copying if the data and the crc are fed to the socket one
> after another.
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