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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11645) Erasure Codec API covering the essential aspects for an erasure code
Date Wed, 30 Sep 2015 16:01:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14937310#comment-14937310
] 

Hudson commented on HADOOP-11645:
---------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8548 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8548/])
HADOOP-11645. Erasure Codec API covering the essential aspects for an (zhezhang: rev 99502cbbe28425fa4eaf42630218b775df1a54f7)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECBlockGroup.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/coder/ErasureCoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/coder/AbstractErasureCoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/codec/XORErasureCodec.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/codec/ErasureCodec.java
* hadoop-common-project/hadoop-common/CHANGES-HDFS-EC-7285.txt
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/codec/RSErasureCodec.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/codec/AbstractErasureCodec.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/grouper/BlockGrouper.java


> Erasure Codec API covering the essential aspects for an erasure code
> --------------------------------------------------------------------
>
>                 Key: HADOOP-11645
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11645
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>             Fix For: HDFS-7285
>
>         Attachments: HADOOP-11645-v1.patch, HADOOP-11645-v2.patch, HADOOP-11645-v3.patch
>
>
> This is to define the even higher level API *ErasureCodec* to possiblly consider all
the essential aspects for an erasure code, as discussed in in HDFS-7337 in details. Generally,
it will cover the necessary configurations about which *RawErasureCoder* to use for the code
scheme, how to form and layout the BlockGroup, and etc. It will also discuss how an *ErasureCodec*
will be used in both client and DataNode, in all the supported modes related to EC.



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