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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8347) Erasure Coding: whether to use chunkSize as the to decode buffersize for Datanode striped block reconstruction.
Date Fri, 08 May 2015 06:47:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14533969#comment-14533969
] 

Kai Zheng commented on HDFS-8347:
---------------------------------

Zhe, this is not about how much bytes we use to encode once a time, but about whether we should
use the same chunk size to perform the decoding with the chunk size used in encoding. Let's
see how HitchHicker experts would tell on this. Thanks.

> Erasure Coding: whether to use chunkSize as the to decode buffersize for Datanode striped
block reconstruction.
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8347
>                 URL: https://issues.apache.org/jira/browse/HDFS-8347
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>
> Currently decode buffersize for Datanode striped block reconstruction is configurable
and can be less or larger than chunksize, it may cause issue for Hitchhiker which may require
encode/decode using same buffersize.



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