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https://issues.apache.org/jira/browse/HADOOP-13665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15963918#comment-15963918
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Kai Zheng commented on HADOOP-13665:
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Thanks [~lewuathe] for the update! The latest patch LGTM. Guess [~jojochuang]
will take another look and commit it. Thanks.
> Erasure Coding codec should support fallback coder
> --------------------------------------------------
>
> Key: HADOOP-13665
> URL: https://issues.apache.org/jira/browse/HADOOP-13665
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io
> Reporter: Wei-Chiu Chuang
> Assignee: Kai Sasaki
> Priority: Blocker
> Labels: hdfs-ec-3.0-must-do
> Attachments: HADOOP-13665.01.patch, HADOOP-13665.02.patch,
> HADOOP-13665.03.patch, HADOOP-13665.04.patch, HADOOP-13665.05.patch,
> HADOOP-13665.06.patch, HADOOP-13665.07.patch, HADOOP-13665.08.patch,
> HADOOP-13665.09.patch, HADOOP-13665.10.patch, HADOOP-13665.11.patch,
> HADOOP-13665.12.patch
>
>
> The current EC codec supports a single coder only (by default pure Java
> implementation). If the native coder is specified but is unavailable, it
> should fallback to pure Java implementation.
> One possible solution is to follow the convention of existing Hadoop native
> codec, such as transport encryption (see {{CryptoCodec.java}}). It supports
> fallback by specifying two or multiple coders as the value of property, and
> loads coders in order.
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