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https://issues.apache.org/jira/browse/HADOOP-17306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B resolved HADOOP-17306.
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Fix Version/s: 3.4.0
3.3.1
3.2.2
Hadoop Flags: Reviewed
Resolution: Fixed
Merged to trunk, branch-3.3 and branch-3.2
Thanks [~aajisaka] and [~ayushsaxena] for reviews.
> RawLocalFileSystem's lastModifiedTime() looses milli seconds in JDK < 10.b09
> ----------------------------------------------------------------------------
>
> Key: HADOOP-17306
> URL: https://issues.apache.org/jira/browse/HADOOP-17306
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.2.2, 3.3.1, 3.4.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> RawLocalFileSystem's FileStatus uses {{File.lastModified()}} api from JDK.
> This api looses milliseconds due to JDK bug.
> [https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8177809]
> This bug fixed in JDK 10 b09 onwards and still exists in JDK 8 which is still
> being used in many productions.
> Apparently, {{Files.getLastModifiedTime()}} from java's nio package returns
> correct time.
> Use {{Files.getLastModifiedTime()}} instead of {{File.lastModified}} as
> workaround.
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