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From "xupeng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10328) Add per-cache-pool default replication configuration
Date Tue, 03 May 2016 07:08:13 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

xupeng updated HDFS-10328:
--------------------------
    Description: 
For now, hdfs cacheadmin can not set a default replication num for cached directive in the
same cachepool. Each cache directive added in the same 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 default replication num for a 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.    




  was:
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.    





> Add per-cache-pool default replication configuration
> ----------------------------------------------------
>
>                 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
>             Fix For: 2.3.0
>
>         Attachments: HDFS-10328.001.patch
>
>
> For now, hdfs cacheadmin can not set a default replication num for cached directive in
the same cachepool. Each cache directive added in the same 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 default replication num for a 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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