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https://issues.apache.org/jira/browse/HDFS-6697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14520194#comment-14520194
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Haohui Mai commented on HDFS-6697:
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What about changing the values through reflection? It should not be exposed in 
the configuration which might lead to compatibility concerns.

> Make NN lease soft and hard limits configurable
> -----------------------------------------------
>
>                 Key: HDFS-6697
>                 URL: https://issues.apache.org/jira/browse/HDFS-6697
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>
> For testing, NameNodeAdapter allows test code to specify lease soft and hard 
> limit via setLeasePeriod directly on LeaseManager. But NamenodeProxies.java 
> still use the default values.
>  
> It is useful if we can make NN lease soft and hard limit configurable via 
> Configuration. That will allow NamenodeProxies.java to use the configured 
> values.



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