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https://issues.apache.org/jira/browse/HDFS-14516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16850486#comment-16850486
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Takanobu Asanuma commented on HDFS-14516:
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Thanks for the review [~elgoiri]. And thanks for your comment [~ayushtkn]. I
agree with your opinion.
Actually, the 1st patch has a problem. I thought {{hdfs-site.xml}} is still
effective for rbf properties but actually it isn't.
The 1st patch loads configuration files in the following order. The latter
overwrites the same properties.
# {{core-site.xml}} and {{hdfs-site.xml}}
# {{hdfs-rbf-default.xml}} (this overwrite all rbf properties by the default
values.)
# {{hdfs-rbf-site.xml}}
The 2nd patch doesn't load {{hdfs-rbf-default.xml}}. It won't affect current
users who use {{hdfs-site.xml}} for rbf properties. So it keeps compatibility.
> RBF: Create hdfs-rbf-site.xml for RBF specific properties
> ---------------------------------------------------------
>
> Key: HDFS-14516
> URL: https://issues.apache.org/jira/browse/HDFS-14516
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Reporter: Takanobu Asanuma
> Assignee: Takanobu Asanuma
> Priority: Major
> Attachments: HDFS-14516.1.patch, HDFS-14516.2.patch
>
>
> Currently, users write rbf properties in {{hdfs-site.xml}} though the
> definitions are in {{hdfs-rbf-default.xml}}. Like other modules, it would be
> better if there is a specific configuration file, {{hdfs-rbf-site.xml}}.
> {{hdfs-rbf-default.xml}} also should be loaded when it exists in the
> configuration directory. It is just a document at the moment.
> There is an early discussion in HDFS-13215.
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