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https://issues.apache.org/jira/browse/HDFS-10645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15385026#comment-15385026
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Akira Ajisaka commented on HDFS-10645:
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Thanks [~yuanbo] for updating the patch. Some comments:
# Would you remove glob pattern in imports?
# I'm thinking SortedSet.last() is better than Collections.max(HashSet) because
we use only the maximum value. Sorry for the back and forth.
# Can we reuse the set to avoid creating instances for each block report?
> Make block report size as a metric and add this metric to datanode web ui
> -------------------------------------------------------------------------
>
> Key: HDFS-10645
> URL: https://issues.apache.org/jira/browse/HDFS-10645
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, ui
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
> Attachments: HDFS-10645.001.patch, HDFS-10645.002.patch,
> Selection_047.png, Selection_048.png
>
>
> Record block report size as a metric and show it on datanode UI. It's
> important for administrators to know the bottleneck of block report, and the
> metric is also a good tuning metric.
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