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https://issues.apache.org/jira/browse/HDFS-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15257676#comment-15257676
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xupeng commented on HDFS-10328:
-------------------------------
Attach a patch.
User can set replication for pool by using "cacheadmin -addPool -replication"
or "cacheadmin -modifyPool -replication". When adding a cache directive into
pool without setting replication num, the cache directive will inherit
replication configuration from cache pool.
Also you can override this setting by using “cacheadmin -addDirective
-replication” or "cacheadmin -modifyDirective -replication".
> 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
> Fix For: 2.3.0
>
> Attachments: HADOOP-10328.001.patch
>
>
> 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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