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https://issues.apache.org/jira/browse/HADOOP-13822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15672764#comment-15672764
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Mingliang Liu commented on HADOOP-13822:
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That one is a bit tricky.

The parent JIRA itself is a patch and has committed. Then we had there are a 
few of follow-on tasks. At that time I thought that may be resolved in weeks. 
After I realized the tasks has been pending review for a while, I regret not 
having created a logical umbrella JIRA.

Let's do this: we don't re-open the parent JIRA as the patch has been 
committed, and backported to {{branch-2}} branch. Re-opening that will be 
confusing. Instead, let's get that code in. I need reviews and ping-ed Jitendra 
and Colin more than once; it seems they are busy in other projects and not 
actively reviewing the left 2 or 3 patches. Can I ask you here review/commit 
that patches?

# [HADOOP-13435] Add a new thread-local mechanism for aggregating file system 
storage stats. This includes the new ThreadLocalStorageStatistics class and its 
test and changes in FileSystemStorageStatistics that use it. After that, the 
FileSystemStorageStatistics can live without the deprecated 
FileSystem$Statistics implementation.
# [HADOOP-13032] Make FileSystems, FileContext, MapReduce and rack-aware read 
stats use the new FileSystemStorageStatistics interface. And remove the 
FileSystem$Statistics and update all its usages

> Use GlobalStorageStatistics.INSTANCE.reset() at FileSystem#clearStatistics()
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-13822
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13822
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HADOOP-13822.patch
>
>
> As per my [comment 
> here|thttps://issues.apache.org/jira/browse/HADOOP-13283?focusedCommentId=15672426&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15672426]
>   GlobalStorageStatistics.INSTANCE.reset() can be used at 
> FileSystem#clearStatistics()



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