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https://issues.apache.org/jira/browse/SPARK-7189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14520694#comment-14520694
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Zhang, Liye commented on SPARK-7189:
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*>=* is always need if we use timestamp as one of the criteria. 

> History server will always reload the same file even when no log file is 
> updated
> --------------------------------------------------------------------------------
>
>                 Key: SPARK-7189
>                 URL: https://issues.apache.org/jira/browse/SPARK-7189
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.3.0
>            Reporter: Zhang, Liye
>            Priority: Minor
>
> History server will check every log file with it's modification time. It will 
> reload the file if the file's modification time is later or equal to the 
> latest modification time it remembered. So it will reload the same file(s) 
> periodically if the file(s) with the latest modification time even if there 
> is nothing change. This is not necessary.



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