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Posted to common-dev@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2008/09/16 19:32:44 UTC

[jira] Updated: (HADOOP-2154) Non-interleaved checksums would optimize block transfers.

     [ https://issues.apache.org/jira/browse/HADOOP-2154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting updated HADOOP-2154:
---------------------------------

    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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