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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8019) Erasure Coding: erasure coding chunk buffer allocation and management
Date Wed, 13 May 2015 12:10:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14541816#comment-14541816
] 

Vinayakumar B commented on HDFS-8019:
-------------------------------------

bq. Might it be the configuration support a bit overkill? Could we start with simple?
Anyway, configurations are not made mandatory. For starting we could define optimal default
values. As configurations would always help for testing without need of code change everytime.
What you say?

> Erasure Coding: erasure coding chunk buffer allocation and management
> ---------------------------------------------------------------------
>
>                 Key: HDFS-8019
>                 URL: https://issues.apache.org/jira/browse/HDFS-8019
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Vinayakumar B
>         Attachments: HDFS-8019-HDFS-7285-01.patch, HDFS-8019-HDFS-7285-02.patch
>
>
> As a task of HDFS-7344, this is to come up a chunk buffer pool allocating and managing
coding chunk buffers, either based on on-heap or off-heap. Note this assumes some DataNodes
are powerful in computing and performing EC coding work, so better to have this dedicated
buffer pool and management.



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