Kai Zheng commented on HADOOP-13061:

Thanks Andrew for the confirm. This refactors {{ErasureCoder}} part and HDFS is 
still using the low level part {{RawErasureCoder}}. Even given this, it would 
take some time to happen for HDFS to switch to ErasureCoder API (for example, 
to use hhxor codec) for stability consideration. We don't need to change 
core-default.xml at this stage for this work.

> Refactor erasure coders
> -----------------------
>                 Key: HADOOP-13061
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13061
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Rui Li
>            Assignee: Kai Sasaki
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HADOOP-13061.01.patch, HADOOP-13061.02.patch, 
> HADOOP-13061.03.patch, HADOOP-13061.04.patch, HADOOP-13061.05.patch, 
> HADOOP-13061.06.patch, HADOOP-13061.07.patch, HADOOP-13061.08.patch, 
> HADOOP-13061.09.patch, HADOOP-13061.10.patch, HADOOP-13061.11.patch, 
> HADOOP-13061.12.patch, HADOOP-13061.13.patch, HADOOP-13061.14.patch, 
> HADOOP-13061.15.patch, HADOOP-13061.16.patch, HADOOP-13061.17.patch, 
> HADOOP-13061.18.patch

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