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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11651) Add a public API for specifying an EC policy at create time
Date Wed, 12 Apr 2017 19:32:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966460#comment-15966460
] 

Andrew Wang commented on HDFS-11651:
------------------------------------

One idea is that we add a new public interface to the builder for the EC APIs. Then, clients
can safely use {{instanceof}} to check if the APIs are present. This is similar to {{Syncable}}
on {{DFSOutputStream}}.

> Add a public API for specifying an EC policy at create time
> -----------------------------------------------------------
>
>                 Key: HDFS-11651
>                 URL: https://issues.apache.org/jira/browse/HDFS-11651
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Andrew Wang
>              Labels: hdfs-ec-3.0-nice-to-have
>
> Follow-on work from HDFS-10996. We extended the create builder, but it still requires
casting to DistributedFileSystem to use, thus is not a public API.



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