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https://issues.apache.org/jira/browse/HDFS-15409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lisheng Sun reassigned HDFS-15409:
----------------------------------

    Assignee: Lisheng Sun

>  Optimization Strategy for choosing ShortCircuitCache
> -----------------------------------------------------
>
>                 Key: HDFS-15409
>                 URL: https://issues.apache.org/jira/browse/HDFS-15409
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Lisheng Sun
>            Assignee: Lisheng Sun
>            Priority: Major
>
> When clientShortCircuitNum is 10, the probability of falling into each 
> ShortCircuitCache is the same, while the probability of other 
> clientShortCircuitNum is different.
> For example if clientShortCircuitNum is 3, when a lot of blockids of SSR are 
> ***1, ***4, ***7, this situation will fall into a ShortCircuitCache.
> Since the real environment blockid is completely unpredictable, i think it is 
> need to design a strategy which is allocated to a specific ShortCircuitCache. 
> This should improve performance even more.



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