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https://issues.apache.org/jira/browse/HDFS-17360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17811500#comment-17811500
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ASF GitHub Bot commented on HDFS-17360:
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huangzhaobo99 opened a new pull request, #6505:
URL: https://github.com/apache/hadoop/pull/6505
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### Description of PR
JIAR: https://issues.apache.org/jira/browse/HDFS-17360
1. In prod env, it is common for high concurrency to read a certain block,
leading to an increase in machine load, And then affect other users.
2. Now, record the number of requests for blockId during a specific time
period on the jmx page, and promptly locate abnormal users or blocks.
3. And combined with the `fsck` tool to obtain specific paths.
### How was this patch tested?
Add `TestDataNodeMetrics#testReadBlockIdCounts` UT.
> Record the number of times a block is read during a certain time period.
> ------------------------------------------------------------------------
>
> Key: HDFS-17360
> URL: https://issues.apache.org/jira/browse/HDFS-17360
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: huangzhaobo
> Assignee: huangzhaobo
> Priority: Major
>
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