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https://issues.apache.org/jira/browse/HDFS-15975?focusedWorklogId=585547&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-585547
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ASF GitHub Bot logged work on HDFS-15975:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 20/Apr/21 04:18
            Start Date: 20/Apr/21 04:18
    Worklog Time Spent: 10m 
      Work Description: tomscut opened a new pull request #2936:
URL: https://github.com/apache/hadoop/pull/2936


   JIRA: [HDFS-15975](https://issues.apache.org/jira/browse/HDFS-15975)
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 585547)
    Time Spent: 4h 10m  (was: 4h)

> Use LongAdder instead of AtomicLong
> -----------------------------------
>
>                 Key: HDFS-15975
>                 URL: https://issues.apache.org/jira/browse/HDFS-15975
>             Project: Hadoop HDFS
>          Issue Type: Wish
>            Reporter: tomscut
>            Assignee: tomscut
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> When counting some indicators, we can use LongAdder instead of AtomicLong to 
> improve performance. The long value is not an atomic snapshot in LongAdder, 
> but I think we can tolerate that.



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