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https://issues.apache.org/jira/browse/HDFS-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15377045#comment-15377045
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xupeng commented on HDFS-10328:
-------------------------------
[~cmccabe]
Thanks a lot for the review :)
> Add per-cache-pool default replication num 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: 2.9.0
>
> Attachments: HDFS-10328.001.patch, HDFS-10328.002.patch,
> HDFS-10328.003.patch, HDFS-10328.004.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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