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From "SammiChen (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-7337) Configurable and pluggable Erasure Codec and schema
Date Tue, 23 May 2017 08:08:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16020781#comment-16020781
] 

SammiChen edited comment on HDFS-7337 at 5/23/17 8:07 AM:
----------------------------------------------------------

Thanks [~eddyxu] and [~andrew.wang] for the discussion and feedback!  Agree that a CLI command
to enable/disable erasure coding policy will be very helpful to end user. HDFS-11870 is created
to track this. I will move on with the implementation. 


was (Author: sammi):
Thanks [~eddyxu] and [~andrew.wang] for the discussion and feedback!  Agree that a CLI command
to enable/disable erasure coding policy will be very helpful to end user. HDFS-11870 is created
to track this. I will move one with the implementation. 

> Configurable and pluggable Erasure Codec and schema
> ---------------------------------------------------
>
>                 Key: HDFS-7337
>                 URL: https://issues.apache.org/jira/browse/HDFS-7337
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: erasure-coding
>            Reporter: Zhe Zhang
>            Priority: Critical
>              Labels: hdfs-ec-3.0-nice-to-have
>         Attachments: HDFS-7337-prototype-v1.patch, HDFS-7337-prototype-v2.zip, HDFS-7337-prototype-v3.zip,
PluggableErasureCodec.pdf, PluggableErasureCodec-v2.pdf, PluggableErasureCodec-v3.pdf, PluggableErasureCodec
v4.pdf
>
>
> According to HDFS-7285 and the design, this considers to support multiple Erasure Codecs
via pluggable approach. It allows to define and configure multiple codec schemas with different
coding algorithms and parameters. The resultant codec schemas can be utilized and specified
via command tool for different file folders. While design and implement such pluggable framework,
it’s also to implement a concrete codec by default (Reed Solomon) to prove the framework
is useful and workable. Separate JIRA could be opened for the RS codec implementation.
> Note HDFS-7353 will focus on the very low level codec API and implementation to make
concrete vendor libraries transparent to the upper layer. This JIRA focuses on high level
stuffs that interact with configuration, schema and etc.



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