[jira] [Created] (HDFS-15409) Optimization Strategy for choosing ShortCircuitCache

["Lisheng Sun (Jira)" <ji...@apache.org>]

Lisheng Sun created HDFS-15409:
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             Summary:  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


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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