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Posted to common-issues@hadoop.apache.org by "Rashmi Vinayak (JIRA)" <ji...@apache.org> on 2015/09/01 02:14:47 UTC

[jira] [Commented] (HADOOP-11828) Implement the Hitchhiker erasure coding algorithm

    [ https://issues.apache.org/jira/browse/HADOOP-11828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14724449#comment-14724449 ] 

Rashmi Vinayak commented on HADOOP-11828:
-----------------------------------------

Hi [~jack_liuquan] and [~drankye],

Thank you both for the amazing effort on this feature implementation. I was wondering what we can do to not lose momentum. Perhaps assigning priorities to the major change suggestions could help?

Thanks!

> Implement the Hitchhiker erasure coding algorithm
> -------------------------------------------------
>
>                 Key: HADOOP-11828
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11828
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: jack liuquan
>         Attachments: 7715-hitchhikerXOR-v2-testcode.patch, 7715-hitchhikerXOR-v2.patch, HADOOP-11828-hitchhikerXOR-V3.patch, HADOOP-11828-hitchhikerXOR-V4.patch, HDFS-7715-hhxor-decoder.patch, HDFS-7715-hhxor-encoder.patch
>
>
> [Hitchhiker | http://www.eecs.berkeley.edu/~nihar/publications/Hitchhiker_SIGCOMM14.pdf] is a new erasure coding algorithm developed as a research project at UC Berkeley. It has been shown to reduce network traffic and disk I/O by 25%-45% during data reconstruction. This JIRA aims to introduce Hitchhiker to the HDFS-EC framework, as one of the pluggable codec algorithms.
> The existing implementation is based on HDFS-RAID. 



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