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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11664) Loading predefined EC schemas from configuration
Date Wed, 30 Sep 2015 17:48:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938070#comment-14938070
] 

Hudson commented on HADOOP-11664:
---------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #439 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/439/])
HADOOP-11664. Loading predefined EC schemas from configuration. (zhezhang: rev d9af36b9bdd1574873f38286a54611d9c8e1a1c7)
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/TestSchemaLoader.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
* hadoop-common-project/hadoop-common/src/main/conf/ecschema-def.xml
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/SchemaLoader.java


> Loading predefined EC schemas from configuration
> ------------------------------------------------
>
>                 Key: HADOOP-11664
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11664
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>             Fix For: HDFS-7285
>
>         Attachments: HADOOP-11664-v2.patch, HADOOP-11664-v3.patch, HDFS-7371_v1.patch
>
>
> System administrator can configure multiple EC codecs in hdfs-site.xml file, and codec
instances or schemas in a new configuration file named ec-schema.xml in the conf folder. A
codec can be referenced by its instance or schema using the codec name, and a schema can be
utilized and specified by the schema name for a folder or EC ZONE to enforce EC. Once a schema
is used to define an EC ZONE, then its associated parameter values will be stored as xattributes
and respected thereafter.



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