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From "xupeng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10328) Add cache pool level replication managment
Date Tue, 26 Apr 2016 06:47:12 GMT
xupeng created HDFS-10328:

             Summary: Add cache pool level replication managment 
                 Key: HDFS-10328
                 URL: https://issues.apache.org/jira/browse/HDFS-10328
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: caching
            Reporter: xupeng
            Assignee: xupeng
            Priority: Minor

For now, hdfs cacheadmin can not set a replication num for cachepool. Each cache directive
added in the cache pool should set their own replication num individually. 

Consider this situation, we add daily hive table into cache pool "hive" .Each time i should
set the same replication num for every table directive in the same cache pool.  

I think we should enable setting a replication num for cachepool that every cache directive
in the pool can inherit replication configuration from the pool. Also cache directive can
override replication configuration explicitly by calling "add & modify  directive -replication"
command from cli.    

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