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Posted to common-issues@hadoop.apache.org by "Mehran Mahbuti (JIRA)" <ji...@apache.org> on 2016/09/01 20:42:20 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=15456547#comment-15456547 ]
Mehran Mahbuti commented on HADOOP-11828:
-----------------------------------------
I want to know weather Hitch Hiker is attached to Hadoop or not and if it is attached I want to know more about its commands.
> 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
> Affects Versions: 3.0.0-alpha1
> Reporter: Zhe Zhang
> Assignee: jack liuquan
> Fix For: 3.0.0-alpha1
>
> Attachments: 7715-hitchhikerXOR-v2-testcode.patch, 7715-hitchhikerXOR-v2.patch, HADOOP-11828-hitchhikerXOR-V3.patch, HADOOP-11828-hitchhikerXOR-V4.patch, HADOOP-11828-hitchhikerXOR-V5.patch, HADOOP-11828-hitchhikerXOR-V6.patch, HADOOP-11828-hitchhikerXOR-V7.patch, HADOOP-11828-v8.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 while retaining the same storage capacity and failure tolerance capability as RS codes. 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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