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https://issues.apache.org/jira/browse/HDFS-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15264841#comment-15264841
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Colin Patrick McCabe commented on HDFS-10328:
---------------------------------------------
Hi [~xupener],
Interesting idea. However, this doesn't sound like "cache pool level
replication management", since the replication management is still
per-directive, even after this patch. This seems like adding a per-cache-pool
default. If you agree, can you update the JIRA name and some of the names in
the patch?
> 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: HDFS-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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