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https://issues.apache.org/jira/browse/HDFS-8953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14737286#comment-14737286
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Kanaka Kumar Avvaru commented on HDFS-8953:
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Thanks for the review [~vinayrpet].
1. After HDFS-9009, NN metrics are also configured to NullAppender by default.
So, we can keep as it is.
2. Yes, some of the attribute values like VolumeInfo are long. So, I avoided
trim in DN metrics log.
3. Thanks for pointing, I have removed the public accessor in latest patch.
> DataNode Metrics logging
> ------------------------
>
> Key: HDFS-8953
> URL: https://issues.apache.org/jira/browse/HDFS-8953
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Kanaka Kumar Avvaru
> Assignee: Kanaka Kumar Avvaru
> Attachments: HDFS-8953-01.patch, HDFS-8953-02.patch,
> HDFS-8953-03.patch
>
>
> HDFS-8880 added metrics logging at NameNode. Similarly, this JIRA is to add
> a separate logger for metrics at DN
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