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https://issues.apache.org/jira/browse/HADOOP-15558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16566369#comment-16566369
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Shreya Gupta edited comment on HADOOP-15558 at 8/2/18 5:25 AM:
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Hi [~Sammi], thanks for starting to look at our code. Take your time to go
through the code and design documentation and please feel free to contact in
case of any doubts.
was (Author: shreya2205):
Hi [~Sammi Chen], thanks for starting to look at our code. Take your time to go
through the code and design documentation and please feel free to contact in
case of any doubts.
> Implementation of Clay Codes plugin (Coupled Layer MSR codes)
> --------------------------------------------------------------
>
> Key: HADOOP-15558
> URL: https://issues.apache.org/jira/browse/HADOOP-15558
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Chaitanya Mukka
> Assignee: Chaitanya Mukka
> Priority: Major
> Attachments: ClayCodeCodecDesign-20180630.pdf,
> HADOOP-15558.001.patch, HADOOP-15558.002.patch
>
>
> [Clay Codes|https://www.usenix.org/conference/fast18/presentation/vajha] are
> new erasure codes developed as a research project at Codes and Signal Design
> Lab, IISc Bangalore. A particular Clay code, with storage overhead 1.25x, has
> been shown to reduce repair network traffic, disk read and repair times by
> factors of 2.9, 3.4 and 3 respectively compared to the RS codes with the same
> parameters.
> This Jira aims to introduce Clay Codes to HDFS-EC as one of the pluggable
> erasure codec.
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